BNS Section 18-Accident In Doing A Lawful Act

Nothing is an offence which is done by accident or misfortune, and without any criminal intention or knowledge in the doing of a lawful act in a lawful manner by lawful means and with proper care and caution.

Illustration

A is at work with a hatchet; the head flies off and kills a man who is standing by. Here, if there was no want of proper caution on the part of A, his act is excusable and not an offence.

BNS Section 17-Act done by a person justified, or by mistake of fact believing himself justified, by law

BNS Section 19-Act likely to cause harm, but done without criminal intent, and to prevent other harm