IPC Section 102 and BNS Section 40: Commencement and Continuance of the Right of Private Defence of the Body
The right of private defence of the body may arise before an assault is completed. It begins when an attempt or threat creates a reasonable apprehension of bodily danger and lasts only while that apprehension continues.
Text of Section 102 of the Indian Penal Code, 1860
Heading: Commencement and continuance of the right of private defence of the body.
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.
Corresponding provision: Section 40 of the Bharatiya Nyaya Sanhita, 2023
BNS Section 40 governs when the right of private defence of the body starts and how long it remains available. Like IPC Section 102, it focuses on a reasonable apprehension arising from an attempt or threat, rather than requiring the threatened offence to have already occurred. The right ends when the reasonable apprehension ends.
Read the official India Code database for the authoritative consolidated text of the Bharatiya Nyaya Sanhita, 2023 (Act 45 of 2023) and the Indian Penal Code, 1860 (Act 45 of 1860).
Meaning and essential requirements
1. A reasonable apprehension of danger
The circumstances must give rise to an objectively reasonable fear of bodily harm. A merely imaginary or speculative fear does not, by itself, establish the right.
2. An attempt or threat may be sufficient
It is not necessary to wait until the attacker actually causes injury. A sufficiently imminent attempt or threat can trigger the right, assessed in light of the circumstances confronting the defender.
3. The right continues only while danger persists
The right does not justify retaliating after the threat has ceased. Whether danger remained is a factual question that depends on the sequence of events and the surrounding evidence.
4. Defensive force remains subject to legal limits
Section 102 concerns timing; it does not independently authorize every degree of force. Under the IPC, Sections 99 to 101 set out restrictions and the circumstances in which causing death or lesser harm may be justified. Under the BNS, the corresponding framework appears in Sections 37 to 39.
IPC Section 102 and BNS Section 40 compared
| Issue | IPC Section 102 | BNS Section 40 |
|---|---|---|
| Subject | Beginning and duration of bodily private defence | Beginning and duration of bodily private defence |
| When it begins | When reasonable apprehension arises from an attempt or threat | Same substantive principle |
| Must injury occur first? | No | No |
| When it ends | When reasonable apprehension ceases | When reasonable apprehension ceases |
| Other restrictions | Especially IPC Sections 99 to 101 | Especially BNS Sections 37 to 39 |
Illustrative examples
Imminent attack: A person advances with a weapon while making a credible immediate threat. Depending on the circumstances, the right may arise before the first blow is struck. The force used must still remain within the legal limits.
Threat has ended: An assailant withdraws and no reasonable apprehension remains. Pursuing the person to inflict punishment is not justified merely because private defence was available moments earlier.
Uncertain danger: An argument without a credible threat or attempt of bodily harm does not automatically establish a right to use violence.
Related statutory provisions
For the complete legal framework, read IPC Sections 96 to 106 and BNS Sections 34 to 44, covering acts done in private defence, defence of person and property, restrictions, and the permissible extent and duration of defensive force. The provisions must be read together, not in isolation.
Frequently asked questions
Does private defence begin only after someone is injured?
No. A reasonable apprehension of bodily danger from an attempt or threat may be enough.
Can private defence continue after the attacker retreats?
Only if a reasonable apprehension of danger still exists. The right ends when that apprehension ceases.
Is IPC Section 102 still the current provision?
For conduct governed by the BNS, the corresponding current provision is Section 40. The IPC remains relevant where repeal and savings rules preserve its application.
Official legal references
India Code - Central legislation | Ministry of Home Affairs | Gazette of India. Consult the official statute and applicable judicial decisions for a particular case.