Section 304 Punishment for culpable homicide not amounting to murder

Whoever commits culpable homicide not amounting to murder shall be punished with [imprisonment for life ],or imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine, if the act by which the death is caused is done with the intention of causing death, or of causing such bodily injury as is likely to cause death,

Or with imprisonment of either description for a term which may extend to ten years, or with fine, or with both, if the act is done with the knowledge that it is likely to cause death ,but without any intention to cause death, or to cause such bodily injury as is likely to cause death.

Section 303 Punishment for murder by life-convict

Whoever, being under sentence of [imprisonment for life],commits murder, shall be punished with death.

Section 302 Punishment for murder

Whoever commits murder shall be punished with death, or 1[imprisonment for life] and shall also be liable to fine.

Section 97 Indian Penal Code 1860

Right of private defence of the body and of property

Every person has a right, subject to the restrictions contained in Section 99, to defend-

First-His own body, and the body of any other person, against any offence affecting the human body;

Secondly-The property, whether movable or immovable, of himself or of any other person, against any act which is an offence falling under the definition of theft, robbery, mischief or criminal trespass, or which is an attempt to commit theft, robbery, mischief for criminal trespass.

Section 96, Indian Penal Code 1860

Nothing is an offence which is done in the exercise of the right of private defence.