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Section 81

Cohabitation caused by a man deceitfully inducing a belief of lawful marriage

Replaces colonial-era: IPC 493

Non-BailableCognizable: Non-CognizableMagistrate First Class

Reform Highlights

1

Direct renumbering from IPC 493 to BNS 81.

2

No substantive changes — the core of the offence (deception inducing belief of lawful marriage leading to cohabitation) preserved.

THE STATUTE

The Clause

Every man who by deceit causes any woman who is not lawfully married to him to believe that she is lawfully married to him and to cohabit or have sexual intercourse with him in that belief, shall be punished with imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine.

Legal Commentary

Section 81 addresses a profound exploitation of trust and social institution — the deliberate creation of a fake marital identity to obtain sexual access to a woman who would not otherwise consent. The offence lies in the deception that creates a false marital context: a woman consents to cohabitation and sex because she believes she is lawfully married. Without that false belief, she would not consent. The deception may take many forms: a fake marriage ceremony conducted by a fraudulent priest, forged marriage registration documents, sustained impersonation of a legitimate spouse, or a bigamous marriage concealed from the second wife. What distinguishes BNS 81 from rape (BNS 64) is the mechanism of deception — here, the victim is not physically coerced or incapacitated; she consents based on a fabricated marital status. What distinguishes it from BNS 69 (sexual intercourse by deceitful means) is the specific deception of marriage itself, and the sustained nature of the cohabitation. The 10-year maximum sentence reflects the sustained, systematic nature of the exploitation — unlike a one-time act of deception, this involves an ongoing false relationship that may last months or years and may result in pregnancy, children, and economic dependency.

Landmark Precedents

Bhaurao Shankar Lokhande v. State of Maharashtra (1965)

AIR 1965 SC 1564
RELEVANCE

Supreme Court examined what constitutes a 'lawful marriage' under IPC 493 (now BNS 81), holding that a ceremony performed without the essential rites required by law does not create a valid marriage — directly relevant to fake ceremony cases.

Case Simulations

"A man who organises a fake religious wedding ceremony through a corrupt priest, making a woman believe she is his legally wedded wife, and cohabits with her for years — BNS 81."
"A man who conceals his existing marriage and presents forged divorce papers to a woman to convince her they are lawfully married — BNS 81."
"A man who assumes his twin brother's identity including producing the brother's marriage certificate to a woman and cohabiting with her — BNS 81."

Expert Insights

No. The essence of the offence is the man's deceit and the woman's genuine belief that she is lawfully married. If both parties knew it was a fake ceremony and chose to cohabit anyway, Section 81 does not apply — though other provisions may.
BNS 69 covers a single instance of sexual intercourse obtained through deceit or a false marriage promise. BNS 81 covers sustained cohabitation and a continuing sexual relationship maintained through the specific deception of a false marital identity. The duration and the specific mechanism (false belief in valid marriage) distinguish them.