Definition
The rule that oral (extrinsic) evidence cannot be admitted to contradict, vary, or add to the terms of a written document that has been completely and finally reduced to writing — the written document is taken as the exclusive and conclusive expression of the parties' agreement.
Section 91-92 of the Bharatiya Sakshya Adhiniyam (BSA), 2023 (formerly Sections 91-92 IEA) codify the parol evidence rule. Section 91 excludes oral evidence to prove the terms of a contract, grant, or other document reduced to writing. Section 92 goes further: where a contract or other disposition of property has been reduced to writing and is complete, no oral evidence may be given to contradict, vary, add to, or subtract from its terms. Exceptions under Section 92 BSA: fraud, mistake, failure of consideration, illegality, or a condition precedent — these can be proved orally even when the contract is in writing.
Statutory Definition
Section 92, Bharatiya Sakshya Adhiniyam (BSA), 2023 (formerly Section 92 IEA): 'When the terms of any such contract, grant or other disposition of property, or any matter required by law to be reduced to the form of a document, have been proved according to the last section, no evidence of any oral agreement or statement shall be admitted, as between the parties to any such instrument or their representatives in interest, for the purpose of contradicting, varying, adding to, or subtracting from, its terms.'
Etymology & Origin
From Old French 'parole' (word, speech, spoken word) — ultimately from Latin 'parabola' (speech, parable). 'Parol' in legal usage means 'oral' or 'by word of mouth.' The rule excludes oral ('parol') evidence when the parties have committed their agreement to writing.
Full Legal Analysis
Parol Evidence Rule: The Written Word Is Final
When parties reduce their agreement to writing and sign it, the writing is taken as the definitive statement of their agreement. This is the parol evidence rule: no one can come to court later and say “yes, but we also verbally agreed to this additional term” — the written document is treated as complete. This rule promotes certainty and finality in commercial transactions but can sometimes produce harsh results when the written document fails to capture the parties’ full agreement.
Section 91 and Section 92 BSA: The Two-Stage Rule
(a) Section 91 BSA (exclusive evidence): When a contract, grant, or other disposition is in writing, the contents of that document must be proved by the document itself — oral evidence cannot prove what the document says. (b) Section 92 BSA (parol exclusion): Once the document is proved, oral evidence cannot add to, subtract from, vary, or contradict its terms. Together, these two sections make the written document both the exclusive proof of its own terms and the complete statement of the parties' agreement.
Exceptions to Section 92 BSA
Six exceptions to the parol exclusion rule: (a) Fraud: Oral evidence of fraud in inducing the contract is always admissible — the contract was not freely entered into. (b) Mistake: Evidence that both parties shared a common mistake about the facts is admissible. (c) Illegality: Oral evidence that the consideration was illegal may be proved. (d) Failure of consideration: If consideration failed, this can be proved orally. (e) Condition precedent: The oral agreement that a written contract was not to operate until a specific condition was fulfilled — a condition precedent to the written contract coming into force can be proved orally. (f) Separate collateral contract: A separate oral agreement on a matter not covered by the written contract is admissible.
“The parol evidence rule is the law of commercial finality. When you sign a contract, you are saying: this document contains everything we agreed. The law takes you at your word and will not let you later import terms you failed to include. If the writing does not say it, the court will not hear that you said it verbally.”
This Term in Indian Statutes
Bharatiya Sakshya Adhiniyam, 2023, 2023
"When the terms of any such contract, grant or other disposition of property have been proved according to the last section, no evidence of any oral agreement or statement shall be admitted, as between the parties to any such instrument or their representatives in interest, for the purpose of contradicting, varying, adding to, or subtracting from, its terms."
Parol evidence rule: oral evidence inadmissible to contradict/vary written contract — six exceptions including fraud, mistake, condition precedent
