Similar Occurrences under Section 13 of the Bharatiya Sakshya Adhiniyam, 2023: Whether an Act Was Accidental or Intentional, and the Doctrine of Similar Facts

A single misfortune proves nothing. A series of identical misfortunes, each benefiting the same person, proves a great deal. Section 13 gives statutory effect to that reasoning: where the question is whether an act was accidental or intentional, the fact that it formed part of a series of similar occurrences in each of which the same person was concerned is relevant. It is the Indian expression of the doctrine of similar facts, and it is confined by its own terms to a single, narrow question.

1. The Provision

Section 13, BSA — Facts bearing on question whether act was accidental or intentional

When there is a question whether an act was accidental or intentional, or done with a particular knowledge or intention, the fact that such act formed part of a series of similar occurrences, in each of which the person doing the act was concerned, is relevant.

Section 13 corresponds to Section 15 of the Indian Evidence Act and is carried forward unchanged. It stands immediately after Section 12, and the two work together: Section 12 admits facts showing a state of mind, and Section 13 admits a particular species of such fact, namely repetition.

2. The Reasoning Behind the Section

The section rests on the improbability of coincidence. An event may occur once by chance. That it should occur repeatedly, in the same manner, always involving the same person, and always to that person's advantage, becomes progressively less likely as the number of instances grows. At some point the hypothesis of accident ceases to be tenable, and the tribunal is entitled to conclude that the acts were designed.

Number of occurrences	Inference available
One	Accident is a wholly plausible explanation. Nothing can be inferred
Two	Coincidence remains possible, though it begins to strain
Three or more, in identical circumstances, always benefiting the same person	The hypothesis of accident becomes very difficult to sustain, and design becomes the natural explanation

⚠ The section does not prove that the act was done

Section 13 answers only the question of the character of an act — whether it was accidental or intentional. It does not establish that the accused did the act at all. Where the question is whether the accused was the person who did it, evidence of similar occurrences is not admissible under this section. Prior conduct going to identity or to a general propensity to offend is excluded by Section 49 and by Explanation 1 to Section 12.

3. The Essentials

Requirement	What it means	Consequence if absent
1. A question whether the act was accidental or intentional, or done with a particular knowledge or intention	The dispute must be about the character of an admitted or established act, not about whether it occurred or who did it	The section is not attracted; the material is inadmissible as evidence of propensity
2. A series of occurrences	More than one other instance. A single previous instance is ordinarily insufficient to raise the improbability of coincidence	The inference of design does not arise
3. Similarity	The occurrences must be similar in kind and in circumstance, not merely of the same general description	The comparison proves nothing; dissimilar events are consistent with chance
4. The person doing the act was concerned in each	The same person must have been involved in every occurrence in the series	The series says nothing about the person before the court
5. The act in question forms part of the series	The occurrence charged must belong to the same pattern and not stand apart from it	The series is irrelevant to the act in question

The fourth requirement deserves emphasis. The section says that the person doing the act must have been 'concerned' in each occurrence, not that he must have been convicted or even accused in respect of them. What must be shown is involvement, and involvement may be established by the ordinary evidence of the circumstances.

4. The Illustrations

Illustration	Facts	Why the series is relevant
(a)	A is accused of burning down his house in order to obtain money for which it is insured. The facts are that A lived in several houses successively, each of which he insured, in each of which a fire occurred, and after each of which fires A received payment from a different insurance company	The facts are relevant as tending to show that the fires were not accidental. A single fire in an insured house proves nothing; a sequence of them, each followed by a payment, is not credibly the work of chance
(b)	A is employed to receive money from the debtors of B, and it is A's duty to make entries in a book showing the amounts received. He makes an entry showing that on a particular occasion he received less than he really did. The question is whether the false entry was accidental or intentional	The facts that other entries made by A in the same book are false, and that the false entry is in each case in favour of A, are relevant. A clerical error may occur once; a pattern of errors all running one way is not error
(c)	A is accused of fraudulently delivering to B a counterfeit currency. The question is whether the delivery was accidental	The facts that soon before or soon after the delivery to B, A delivered counterfeit currency to C, D and E are relevant, as showing that the delivery to B was not accidental

Illustration (b) contains the sharpest statement of the principle in the Adhiniyam. It is not merely that other entries were false. It is that the false entries were in each case in favour of A. Randomness has no direction; design does. The consistent direction of the error is what converts a set of mistakes into a pattern.

5. The Doctrine of Similar Facts

Sections 12 and 13 together are the Indian statutory form of what the common law calls the similar fact doctrine. The general rule is that evidence of conduct on other occasions is inadmissible, because it invites reasoning from disposition to guilt. The exception is that such evidence may be received where it goes to an issue in the case other than disposition — such as whether an act was accidental, whether the accused had a particular knowledge, or whether an innocent explanation is tenable.

	Inadmissible propensity reasoning	Admissible similar fact reasoning
The chain of inference	He has done this kind of thing before, therefore he is the sort of person who does it, therefore he probably did it this time	These events cannot all have been accidents, therefore this one was not an accident
What it goes to	The character and disposition of the accused	The character of the act, or the knowledge or intention with which it was done
Statutory position	Excluded by Section 49 and by Explanation 1 to Section 12	Admitted by Sections 12 and 13
Illustration	That the accused has previous convictions for arson	That each of the accused's successive houses was insured and burnt, and a payment followed each fire

⚠ How to tell the two apart

The test is whether the reasoning passes through the character of the accused. If the argument is that the accused is the kind of person who does such things, the evidence is inadmissible however many instances are shown. If the argument is that so many similar events cannot all be accidental, the evidence is admissible, and the character of the accused plays no part in the inference. The strength of the similar fact evidence lies not in the number of times the accused has misbehaved but in the improbability of the coincidence.

6. Section 13 Compared with Sections 12 and 14

	Section 12	Section 13	Section 14
Question addressed	Whether a person held a particular state of mind or bodily feeling	Whether an act was accidental or intentional, or done with a particular knowledge or intention	Whether a particular act was done at all
What is admitted	Facts showing the existence of the state of mind or body	A series of similar occurrences in which the same person was concerned	The existence of a course of business according to which the act naturally would have been done
Limitation	Explanation 1 — the state of mind must be shown in reference to the particular matter in question	The series must be genuinely similar, and the same person must be concerned in each occurrence	The course of business must be established as regular and habitual
Typical use	Knowledge that goods were stolen; ill-will towards a complainant; good faith in a transaction	Repeated insured fires; a pattern of false entries; repeated delivery of counterfeit currency	Whether a letter was posted; whether a notice was dispatched in the ordinary course of an office

The three provisions occupy adjacent ground and are frequently pleaded together. Where a bank clerk is charged with dishonest misappropriation, Section 14 may establish that the entries were made at all, Section 13 that the errors were not accidental, and Section 12 that he knew the true position. Each addresses a different question and none is a substitute for the others.

7. Practical Applications

Field	Question	Series relied upon
Insurance fraud	Whether the fire, loss or death was accidental	Successive insured properties destroyed; repeated claims; multiple policies taken shortly before the loss
Misappropriation and falsification of accounts	Whether the entry was an error or was dishonest	Other false entries in the same book, all in the accused's favour
Counterfeit currency and forgery	Whether the delivery or utterance was innocent	Other deliveries of counterfeit currency at about the same time; other forged instruments passed
Cheating and inducement	Whether the representation was made with dishonest intention	A pattern of identical representations made to other persons, each followed by the same loss
Poisoning	Whether the administration was accidental	Successive deaths in similar circumstances in which the accused was concerned, each followed by a benefit
Adulteration and food offences	Whether the accused knew the article was adulterated	Repeated instances of adulterated stock from the same source
Negligence in civil claims	Whether the incident was an isolated mishap	A pattern of identical incidents at the same premises or with the same equipment

8. Limits and Cautions

The section is confined to the character of the act. It cannot be used to prove identity, and it cannot be used to prove that the act occurred. Where the accused denies doing the act at all, evidence of similar occurrences does not assist and is inadmissible under this section.
Similarity must be real. Occurrences of the same general description are not enough. The circumstances must correspond closely enough that the recurrence is genuinely improbable as a matter of chance.
A single previous instance is ordinarily insufficient. The section speaks of a 'series', and the whole force of the reasoning depends on repetition.
Each occurrence in the series must itself be proved. A series cannot be built from assertions. Each instance must be established by admissible evidence, and an unproved instance drops out of the series.
The risk of prejudice is real and must be weighed. Evidence of other misconduct is inherently prejudicial, and there is a standing danger that a tribunal will use it as propensity evidence notwithstanding the limited purpose for which it was received. The material must be confined in terms to the issue of accident or intention.
It does not override the rules of exclusion. Material within Section 13 remains subject to Section 23 on police confessions, Section 49 on previous bad character in its own terms, and the provisions on privilege.

⚠ Section 13 and Explanation 2 to Section 12 read together

Where the previous occurrences relied upon under Section 13 are themselves offences, and their previous commission is relevant within the meaning of Section 12, Explanation 2 to Section 12 permits the previous conviction for them also to be proved. This spares the party from establishing each earlier offence afresh. The Explanation does not, however, enlarge what is relevant: it applies only where the previous commission was already relevant under Section 12, and a conviction that fails that test remains excluded by Section 49.

9. Related Topics and Provisions

Topic or provision	Connection
State of Mind, State of Body and Bodily Feeling — Section 12	The preceding head, of which Section 13 admits a particular species of evidence
Existence of Right or Custom — Section 11	The head preceding Section 12
Motive, Preparation and Conduct — Section 6	Evidence of a previous offence admitted because it constitutes the motive
Section 14, BSA	Existence of a course of business, where the question is whether a particular act was done
Sections 46 to 50, BSA	Character evidence, and the exclusion of previous bad character except in reply by Section 49
Section 119, BSA	The general presumption from the common course of natural events and human conduct
Direct Evidence vs Circumstantial Evidence	The standard applied to the inference of design drawn from a series of occurrences