Right of Private Defence: Sections 34 to 44 BNS Explained

The state, however efficient its police, cannot be everywhere at once. When a man draws a knife on you at night, when a group breaks into your house, when an assailant threatens your family, you cannot pause the crime and dial for help. The law recognises this, and gives every person the right to defend himself, his property, and specified others against unlawful aggression. The right of private defence, gathered in Sections 34 to 44 of the Bharatiya Nyaya Sanhita, 2023, is one of the oldest and most robust rights in Indian criminal law. It is a substantive right, not a mere excuse, and it operates on a principle of proportion: the force used must not exceed the force needed. This module walks through the eleven sections, the ten Darshan Singh principles, and the leading Indian cases.

1. Meaning and Concept

The right of private defence as a substantive right

Private defence is not a mere excuse to be pleaded after the fact. It is a substantive right, existing in every citizen, to defend himself, his family, and his property against unlawful aggression. The distinction matters. An excuse operates on the moral quality of an act; a right operates on the legal quality of it. When a person exercises the right of private defence, he is not doing something wrong that the law excuses; he is doing something the law affirmatively authorises. Section 34 BNS captures this by saying nothing is an offence which is done in the exercise of the right of private defence.

The moral and social foundation

The three propositions the right rests on

The state cannot always be present when unlawful violence is threatened. The citizen must be permitted to protect himself.
Human dignity requires the freedom to resist unlawful aggression. To require a citizen to submit to an unlawful assault would treat him as less than a full moral agent.
The right is a substitute for state protection, not a competitor with it. It operates only where state protection is not available, and only to the extent necessary to prevent the harm.

The doctrine of proportion

The right of private defence is bounded by the requirement of proportion. The force used must not exceed the force reasonably necessary to prevent the aggression. A shove in response to a shove; a defensive push against an armed attacker; a fatal shot against a person with a lethal weapon in the moment of attack. Each is a different proportion, and the law measures the response against the threat. Where the response is excessive, the right of private defence does not extend to it, and the actor is liable for the excess.

2. Historical Origin

Roman and canon law

Roman law recognised the right of self defence under the phrase vim vi repellere licet: force may be repelled by force. Cicero, in the Pro Milone, called it lex naturalis, a natural law that could not be repealed. The medieval canonists absorbed the Roman doctrine and connected it to the moral requirement of proportion: the response must not exceed the aggression.

English common law

English common law recognised the right of self defence from an early date. Blackstone, in the Commentaries (1765), described it as a right of the highest antiquity, given by the great Legislator to man. Nineteenth century case law developed the doctrine, distinguishing between defence against felony (broad) and defence against misdemeanour (narrow), and imposing a duty to retreat in certain cases. The modern English position, refined through many decisions, allows a proportionate response to unlawful aggression.

Reception into the Indian Penal Code

Macaulay codified the right in Sections 96 to 106 IPC, drawing on the common law tradition but simplifying the doctrine and codifying its scope. The Indian version is unusually generous: it recognises the right against public servants acting in specified circumstances, against persons legally incapable (children, insane persons), and against certain grave offences with the right to cause death. The Bharatiya Nyaya Sanhita retains the framework, unchanged in substance, in Sections 34 to 44.

3. Statutory Framework: Sections 34 to 44

The eleven sections at a glance

Provision	Content
General right of private defence.	Section 34: nothing is an offence done in the exercise of the right.
Extent of the right.	Section 35: extends to defence of one's own body, another's body, one's own property, another's property.
Persons legally incapable.	Section 36: right extends against acts of children, insane persons and others legally incapable.
Restrictions.	Section 37: no more harm than necessary; no defence where recourse to authorities is possible; limited defence against public servants.
Defence of body: death may be caused.	Section 38: six categories of assault where the right extends to voluntarily causing death.
Defence of body: other cases.	Section 39: right extends to any harm short of death.
Defence of body: commencement.	Section 40: begins on reasonable apprehension, continues as long as apprehension continues.
Defence of property: death may be caused.	Section 41: six categories of offence against property where the right extends to voluntarily causing death.
Defence of property: other cases.	Section 42: right extends to any harm short of death.
Defence of property: commencement.	Section 43: different rules for theft, robbery, criminal trespass, and mischief.
Defence against deadly assault with risk to innocent person.	Section 44: right extends even where an innocent person may be harmed.

The two clusters: defence of body and defence of property

The framework has two parallel clusters. Sections 38 to 40 govern defence of the body; Sections 41 to 43 govern defence of property. Section 44 sits alongside them, dealing with the exceptional case where the defender must act in circumstances of risk to an innocent third party. Sections 34 to 37 are the umbrella provisions applicable to both clusters.

4. Section 34: The General Right

Section 34 BNS (formerly Section 96 IPC)

Nothing is an offence which is done in the exercise of the right of private defence.

The section is a foundational declaration. Anything done in the exercise of the right, within the limits laid down in Sections 35 to 44, is not an offence at all. The section does not say the actor is excused; it says his act is not an offence. This is the substantive right character of private defence.

5. Section 35: Extent of the Right

Section 35 BNS (formerly Section 97 IPC)

Every person has a right, subject to the restrictions contained in Section 37, to defend:

(a) his own body, and the body of any other person, against any offence affecting the human body;
(b) the property, whether movable or immovable, of himself or of any other person, against any act which is an offence falling under the definition of theft, robbery, mischief or criminal trespass, or which is an attempt to commit theft, robbery, mischief or criminal trespass.

Section 35 defines the extent of the right. Four rights are recognised:

Defence of one's own body.
Defence of the body of any other person.
Defence of one's own property.
Defence of the property of any other person.

The defence of another's body extends to any offence affecting the human body, including assault, hurt, grievous hurt, and rape. The defence of property extends to theft, robbery, mischief and criminal trespass. The right applies whether the defender knows the person or property being defended or not.

6. Section 36: Persons Legally Incapable

Section 36 BNS (formerly Section 98 IPC)

When an act, which would otherwise be a certain offence, is not that offence, by reason of the youth, the want of maturity of understanding, the unsoundness of mind or the intoxication of the person doing that act, or by reason of any misconception on the part of that person, every person has the same right of private defence against that act which he would have if the act were that offence.

The section preserves the right of private defence against acts by persons legally incapable of committing an offence: children under seven, children between seven and twelve who lack maturity, persons of unsound mind, intoxicated persons, and persons acting under a misconception. The aggressor's own legal incapacity does not disable the defender.

Illustration: Z, a child of six, attacks A with an axe. A is entitled to defend himself, even though Z is legally incapable of committing an offence under Section 20 BNS.
Illustration: Z, an insane person, attempts to kill A. A is entitled to defend himself, even though Z has the defence of Section 22 BNS.

7. Section 37: Restrictions on the Right

Section 37 BNS (formerly Section 99 IPC), key restrictions

Nothing is done in the exercise of the right of private defence which is done against an act which does not reasonably cause the apprehension of death or of grievous hurt, if done, or attempted to be done, by a public servant acting in good faith under colour of his office, though that act may not be strictly justifiable by law.
Nothing is done in the exercise of the right of private defence in cases in which there is time to have recourse to the protection of the public authorities.
The right of private defence in no case extends to the inflicting of more harm than it is necessary to inflict for the purpose of defence.

Three critical restrictions:

Public servants. The right does not extend to acts by a public servant acting in good faith under colour of his office, unless the act reasonably causes apprehension of death or grievous hurt. A citizen may not resist an arrest by a policeman acting in good faith, even if the arrest is technically defective.
Time to seek help. Where there is time to have recourse to the protection of the public authorities (police, court, magistrate), the right does not apply. Private defence is a substitute for state protection, not an alternative to it.
Proportion. The right does not extend to inflicting more harm than is necessary for the purpose of defence. Excessive force is not private defence.

8. Section 38: When Death May Be Caused for Defence of Body

Section 38 BNS (formerly Section 100 IPC)

The right of private defence of the body extends, under the restrictions in Section 37, to the voluntary causing of death or of any other harm to the assailant, if the offence which occasions the exercise of the right be of any of the descriptions hereinafter enumerated:

The six categories where death may be caused

(1) An assault which may reasonably cause the apprehension that death will otherwise be the consequence.
(2) An assault which may reasonably cause the apprehension that grievous hurt will otherwise be the consequence.
(3) An assault with the intention of committing rape.
(4) An assault with the intention of gratifying unnatural lust.
(5) An assault with the intention of kidnapping or abducting.
(6) An assault with the intention of wrongfully confining a person, under circumstances which may reasonably cause him to apprehend that he will be unable to have recourse to the public authorities for his release.
(7) An act of throwing or administering acid or an attempt to throw or administer acid which may reasonably cause the apprehension that grievous hurt will otherwise be the consequence of such act. (Added after the Criminal Law (Amendment) Act, 2013.)

In these seven categories, the right extends to voluntarily causing death. In all other cases, the right of defence of body is limited by Section 39. The categories are exhaustive.

9. Section 39: Other Cases of Defence of Body

Section 39 BNS (formerly Section 101 IPC)

If the offence be not of any of the descriptions enumerated in the last preceding section, the right of private defence of the body does not extend to the voluntary causing of death to the assailant, but does extend, under the restrictions mentioned in Section 37, to the voluntary causing to the assailant of any harm other than death.

For all offences against the body other than the six (now seven) categories in Section 38, the right extends to voluntarily causing any harm short of death. Simple assault, ordinary hurt, and minor threats of grievous hurt fall under this section. A defender exceeding this limit and voluntarily causing death is not protected by private defence for the excess.

10. Section 40: Commencement and Continuance of Defence of Body

Section 40 BNS (formerly Section 102 IPC)

The right of private defence of the body commences as soon as a reasonable apprehension of danger to the body arises from an attempt or threat to commit the offence though the offence may not have been committed; and it continues as long as such apprehension of danger to the body continues.

Two rules:

Commencement: on reasonable apprehension of danger, even before the offence is actually committed. A defender need not wait for the first blow.
Continuance: as long as the apprehension continues. Once the aggression has ended and the danger has passed, the right ceases. Retaliation after the fact is not private defence.

11. Section 41: When Death May Be Caused for Defence of Property

Section 41 BNS (formerly Section 103 IPC)

The right of private defence of property extends, under the restrictions mentioned in Section 37, to the voluntary causing of death or of any other harm to the wrong doer, if the offence, the committing of which, or the attempting to commit which, occasions the exercise of the right, be an offence of any of the descriptions hereinafter enumerated:

The six categories where death may be caused for defence of property

(1) Robbery.
(2) House breaking after sunset and before sunrise.
(3) Mischief by fire committed on any building, tent or vessel which is used as a human dwelling or for the custody of property.
(4) Theft, mischief or house trespass, under such circumstances as may reasonably cause apprehension that death or grievous hurt will be the consequence, if such right of private defence is not exercised.

Four categories only in Section 41 (unlike the six or seven for defence of body). The right to cause death for defence of property is thus narrower than for defence of body. This reflects the higher moral value the law places on the body. Where property alone is at stake, the right to cause death is reserved for particularly grave offences.

12. Section 42: Other Cases of Defence of Property

Section 42 BNS (formerly Section 104 IPC)

If the offence, the committing of which, or the attempting to commit which, occasions the exercise of the right of private defence, be theft, mischief, or criminal trespass, not of any of the descriptions enumerated in Section 41, that right does not extend to the voluntary causing of death, but does extend, under the restrictions mentioned in Section 37, to the voluntary causing to the wrong doer of any harm other than death.

For theft, mischief or criminal trespass not falling within the four categories of Section 41, the right is limited to voluntarily causing any harm short of death. This governs the ordinary case of petty theft or minor trespass.

13. Section 43: Commencement and Continuance of Defence of Property

Section 43 BNS (formerly Section 105 IPC)

Against theft. The right commences when a reasonable apprehension of danger to the property arises, and continues till the offender has effected his retreat with the property or till the property has been recovered.
Against robbery. The right continues as long as the offender causes or attempts to cause death, hurt or wrongful restraint, or as long as the fear of instant death or of instant hurt or of instant personal restraint continues.
Against criminal trespass or mischief. The right continues as long as the offender continues in the commission of criminal trespass or mischief.
Against house breaking by night. The right continues as long as the house trespass which has been commenced by such house breaking continues.

Four different rules for four different offences. The general principle: the right lasts as long as the aggression lasts. Once the offender has completed the offence and retreated, or the aggression has ended, the right ceases.

14. Section 44: Defence Against Deadly Assault with Risk to Innocent Person

Section 44 BNS (formerly Section 106 IPC)

If in the exercise of the right of private defence against an assault which reasonably causes the apprehension of death, the defender be so situated that he cannot effectually exercise that right without risk of harm to an innocent person, his right of private defence extends to the running of that risk.

The section addresses a hard case. A defender, facing a deadly assault, may find that any defensive act will risk harm to an innocent third party. Section 44 permits the risk to be taken.

Illustration to Section 44

A is attacked by a mob who attempt to murder him. He cannot effectually exercise his right of private defence without firing on the mob, and he cannot fire without risk of harming young children who are mingled with the mob. A commits no offence if by so firing he harms any of the children.

15. Darshan Singh: The Ten Principles

📖 Darshan Singh v. State of Punjab, (2010) 2 SCC 333

The Supreme Court, in a comprehensive review of the law of private defence, laid down ten guiding principles:

1. Self preservation is a basic human instinct and is duly recognised by the criminal jurisprudence of all civilised countries. All free, democratic and civilised countries recognise the right of private defence within certain reasonable limits.
2. The right of private defence is available only to one who is suddenly confronted with the necessity of averting an impending danger not of self creation.
3. A mere reasonable apprehension is enough to put the right of self defence into operation. It is not necessary that there should be an actual commission of the offence in order to give rise to the right of private defence. It is enough if the accused apprehended that such an offence is contemplated.
4. The right of private defence commences, as soon as a reasonable apprehension arises and it is co terminus with the duration of such apprehension.
5. It is unrealistic to expect a person under assault to modulate his defence step by step with any arithmetical exactitude.
6. In private defence the force used by the accused ought not to be wholly disproportionate or much greater than necessary for protection of the person or property.
7. It is well settled that even if the accused does not plead self defence, it is open to consider such a plea if the same arises from the material on record.
8. The accused need not prove the existence of the right of private defence beyond reasonable doubt.
9. The Indian Penal Code confers the right of private defence only when that unlawful or wrongful act is an offence.
10. A person who is in imminent and reasonable danger of losing his life or limb may in exercise of self defence inflict any harm even extending to death on his assailant either when the assault is attempted or directly threatened.

16. Burden of Proof

The burden of establishing the right of private defence rests on the accused, but the standard is preponderance of probabilities under Section 108 BSA. However, the Darshan Singh principle (7) makes clear that even if the accused does not plead self defence, the court is to consider it where it arises from the material on record. The accused may also rely on evidence brought in by the prosecution.

Even where the accused fails to establish the right on the balance of probabilities, if his evidence creates a reasonable doubt on any ingredient of the offence charged, he is entitled to acquittal (Munshi Ram v. Delhi Administration, AIR 1968 SC 702).

17. Consolidated Landmark Judgments

Darshan Singh v. State of Punjab, (2010) 2 SCC 333. Ten guiding principles for the exercise of the right of private defence.
Munney Khan v. State of Madhya Pradesh, AIR 1971 SC 1491. Proportionality in private defence. Force used must not exceed force needed.
Deo Narain v. State of Uttar Pradesh, (1973) 1 SCC 347. Reasonable apprehension of danger is sufficient. No arithmetic modulation of defence required.
Buta Singh v. State of Punjab, (1991) 2 SCC 612. Right ceases once aggression has ceased. Retaliation is not private defence.
Yogendra Morarji v. State of Gujarat, (1980) 2 SCC 218. Right does not extend where there is time to seek public authorities.
Munshi Ram v. Delhi Administration, AIR 1968 SC 702. Burden of proof and the reasonable doubt principle applied to private defence.
James Martin v. State of Kerala, (2004) 2 SCC 203. Elaborate discussion of the right of private defence. Public interest and individual liberty balanced.
Kishan v. State of Madhya Pradesh, (1974) 3 SCC 623. Section 100 IPC (now Section 38 BNS): assault causing reasonable apprehension of grievous hurt.
Vishwanath v. State of Uttar Pradesh, AIR 1960 SC 67. Defence of body of another person. Brother defending sister from kidnapping.
Salim Zia v. State of Uttar Pradesh, (1979) 2 SCC 648. The burden on the accused of pleading and proving private defence.
Onkarnath Singh v. State of Uttar Pradesh, AIR 1974 SC 1550. Excess of the right of private defence attracts liability for the excess only.

Frequently Asked Questions

What is the right of private defence?

The right of private defence is the substantive right of every person to defend himself, his family, and his property against unlawful aggression. It is codified in Sections 34 to 44 of the Bharatiya Nyaya Sanhita, 2023 (formerly Sections 96 to 106 IPC). It is a substantive right, not a mere excuse, and its exercise is not an offence at all.

When can death be caused in private defence of the body?

Section 38 BNS lists seven categories of assault where the right extends to voluntarily causing death: (i) assault causing reasonable apprehension of death; (ii) assault causing reasonable apprehension of grievous hurt; (iii) assault with intention to commit rape; (iv) assault with intention of gratifying unnatural lust; (v) assault with intention of kidnapping or abducting; (vi) assault with intention of wrongful confinement where recourse to public authorities is impossible; and (vii) acid attack.

When can death be caused in private defence of property?

Section 41 BNS lists four categories of offence against property where the right extends to voluntarily causing death: (i) robbery; (ii) house breaking after sunset and before sunrise; (iii) mischief by fire on a human dwelling or building storing property; and (iv) theft, mischief or house trespass causing reasonable apprehension of death or grievous hurt.

What are the restrictions on the right of private defence under Section 37 BNS?

Three main restrictions: (i) the right does not extend to acts by public servants acting in good faith under colour of office, unless the act reasonably causes apprehension of death or grievous hurt; (ii) the right does not apply where there is time to have recourse to the public authorities; and (iii) the right does not extend to inflicting more harm than is necessary for the purpose of defence.

What are the ten Darshan Singh principles?

In Darshan Singh v. State of Punjab, (2010) 2 SCC 333, the Supreme Court laid down ten guiding principles: self preservation is a basic human instinct; the right is only for one facing a sudden and unbroken threat; reasonable apprehension is enough; the right commences with apprehension and lasts as long as it does; arithmetic exactitude is not required; force must not be wholly disproportionate; the court may consider self defence even where it is not pleaded; the accused need not prove it beyond reasonable doubt; the aggression must be an offence; and imminent danger to life or limb permits any defensive harm including death.

When does the right of private defence commence?

Section 40 BNS: the right of private defence of the body commences as soon as a reasonable apprehension of danger to the body arises from an attempt or threat to commit the offence, though the offence may not have been committed. It continues as long as such apprehension of danger continues. A defender need not wait for the first blow, but once the aggression has ended, retaliation is not private defence.

Private Defence Sections 34 to 44 BNS