Section 42

This provision continues a rule from the old Indian Penal Code (Section 104), which balanced two ideas: the law lets people protect their property, but it does not want minor property crimes to become an excuse for killing someone. Serious, aggravated forms of theft, mischief, or trespass (like robbery, house-breaking by night, or arson) are dealt with separately in Section 41, where the right of private defence can extend to causing death because the danger to life or safety is higher. For lesser, non-violent property offences, the law limits the response to non-lethal harm, keeping the punishment proportionate to the threat.

Indian courts, interpreting the identical predecessor provision (IPC Section 104), have consistently held that the right of private defence against simple theft, mischief, or trespass is limited and does not justify lethal force. Judges have emphasized that the response must be proportionate to the threat and confined to what is necessary to stop the wrongdoer, echoing the general restrictions on private defence found in Section 37 (formerly IPC Section 99). Courts have also stressed that if the offence escalates into one of the aggravated forms listed in Section 41 (such as robbery or house-breaking at night), a higher degree of defensive force, including causing death, may become justifiable.

• Myth: You can kill anyone who tries to steal your property.
  Fact: The law only allows causing death in defence against serious, aggravated offences listed in Section 41 (like robbery or arson), not ordinary theft, mischief, or trespass covered by Section 42.
• Myth: Section 42 gives no right to use any force against thieves.
  Fact: It does allow causing harm short of death to stop the wrongdoer, as long as it stays within the limits set by Section 37.