6. Act done by person bound, or by mistake of fact believing himself bound, by law

Nothing is an offence which is done by a person who is, or who, by reason of a mistake of fact, and not by reason of a mistake of law, in good faith believes himself to be bound by law to do it.

Explanation — Nothing is said to be done or believed in good faith which is done or believed without due care and attention.

Illustration

A, an officer of a Court, being ordered by that Court to arrest B, and after due inquiry believing C to be B, arrests C. A has committed no offence.