Section 102 of IPC 1860: Commencement and continuance of the right of private defence of the body
Commencement and continuance of the right of private defence of the body-Indian Penal Code
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.