Indian evidence law | Updated October 2026
Section 91 Evidence Act: Proof of Written Contracts, Grants and Property Documents
When the terms of a contract, grant or other disposition of property are put into writing, the law ordinarily requires the document itself to prove those terms. This principle, commonly called the best evidence rule, was set out in Section 91 of the Indian Evidence Act, 1872 and is now substantially carried forward in Section 94 of the Bharatiya Sakshya Adhiniyam, 2023 (BSA).
What does Section 91 of the Indian Evidence Act provide?
The former Section 91 stated that where the terms of a contract, grant or other disposition of property have been reduced to a document, or the law requires a matter to be recorded in a document, those terms must be proved by producing the document itself, or by secondary evidence of its contents where such evidence is legally admissible. This is a rule about the mode of proving the terms of a document, not a blanket ban on every oral statement connected with a transaction.
Under the current statute, Section 94 of the BSA, titled Evidence of terms of contracts, grants and other dispositions of property reduced to form of document, addresses the same subject. Read it together with the BSA rules governing primary and secondary evidence and proof of electronic records.
Meaning of the important legal expressions
- Contract
- An agreement enforceable by law. When its terms are recorded in writing, the document is ordinarily the proper evidence of those terms.
- Grant
- A legal conferment or transfer of a right or interest, including rights relating to property, as applicable to the instrument.
- Disposition of property
- A transaction or legal act by which rights or interests in property are transferred, created or otherwise dealt with.
- Primary evidence
- Evidence consisting of the document itself, subject to the statutory rules that also address electronic and digital records.
- Secondary evidence
- Evidence of a document's contents that the law permits in specified circumstances, such as certain cases involving a lost original or an original held by another person.
Why does the rule matter?
A witness generally cannot replace the actual written terms of a sale deed, written lease or contractual instrument by giving a different recollection of what the document says. If the original is unavailable, the party relying on secondary evidence must first satisfy the applicable legal conditions. Admissibility of the document does not, by itself, establish that it is genuine, duly executed, legally valid or conclusive on every disputed fact.
Two exceptions and three explanations
Exception 1: Appointment of a public officer
If the law requires a public officer to be appointed in writing, and a particular person is shown to have acted as that officer, the written instrument of appointment need not be separately proved for this limited purpose.
Exception 2: Probate of a will
A will admitted to probate in India may be proved by the probate, subject to the applicable law and the issues actually in dispute.
Explanation 1: More than one document
The rule applies whether the transaction is recorded in a single document or spread across several documents. Where letters together contain the agreement, the relevant correspondence must be considered as a whole.
Explanation 2: Multiple originals
Where more than one original exists, proof of one original is sufficient under this explanation.
Explanation 3: Other facts mentioned in a document
Merely because a document recites a fact outside the terms that Section 91 protects does not prevent oral evidence about that separate fact. For example, an acknowledgment about an unrelated earlier payment may be independently disputed.
Statutory illustrations explained
- Contract in several letters: If an agreement is contained in several letters, all the letters forming the contract must be proved.
- Bill of exchange: If a contract is embodied in a bill of exchange, the bill must be proved.
- Bill drawn in a set: Where a bill of exchange is drawn in a set of three, proving one is sufficient.
- Reference to an earlier payment: A written contract for delivery of indigo mentions payment for indigo supplied under a separate oral contract. Oral evidence that the earlier payment was never made is admissible because it concerns a separate fact.
- Receipt for payment: A gives B a receipt for money paid. Oral evidence that the payment occurred is admissible; the fact of payment can be established independently of the receipt's wording.
Written contracts and electronic records
Documents may now be electronic or digital. The BSA expressly addresses electronic records within its documentary-evidence framework. An email agreement, electronically signed contract or digitally stored instrument may be relevant, but its admissibility and proof depend on the applicable requirements, including Section 63 of the BSA where a computer output is relied on and that provision applies. A party should preserve the native record, metadata, source information and any required certificate rather than relying only on a screenshot.
The substantive validity of an electronic contract may also involve the Information Technology Act, 2000 and the governing contract or property law. Section 94 does not dispense with rules on registration, stamping, execution or proof of signatures where those rules apply.
Section 91 and Section 92: What is the distinction?
Section 91 deals principally with how to prove the terms of a transaction reduced to writing. Section 92 of the former Evidence Act addresses when oral agreements or statements may be used to contradict, vary, add to or subtract from terms that have been proved, subject to its provisos. The corresponding current provision is Section 95 of the BSA. The two provisions operate together but answer different questions.
Frequently asked questions
Can a witness orally prove the contents of a written agreement?
Ordinarily, the terms must be proved by the document itself, or by legally admissible secondary evidence. Oral testimony may still prove separate facts that the rule does not exclude.
Is a photocopy always admissible if the original is missing?
No. The party must establish a statutory ground for using secondary evidence and comply with the applicable requirements. The mere absence of the original is not enough in every case.
Does Section 91 apply to several letters making up one contract?
Yes. If the contract is contained in several letters, the relevant letters forming the contract must be proved.
Which law applies to cases filed before 1 July 2024?
The BSA includes repeal and savings provisions concerning pending proceedings. The applicable procedural regime should be assessed with reference to Section 170 of the BSA and the circumstances of the case.
Official statutory sources
- Bharatiya Sakshya Adhiniyam, 2023 (Act 47 of 2023) - India Code (see Sections 57-63, 94-95 and 170).
- Indian Evidence Act, 1872 - India Code (historical Section 91).
- India Code official legislation portal for amendments and updated statutory text.
This article is general legal information, not advice for a particular dispute. Consult the current statutory text and applicable judicial decisions before relying on a provision in court.