SECTION 88 IPC : Act committed with good faith and consent but without the intent to cause death.—Nothing that is not intended to cause death constitutes a crime if it harms a person for whose benefit it is done in good faith and who has given their express or implied consent to suffer that harm or to assume the risk of it, regardless of whether the harm was intended, known to the doer to be likely to occur, or is the result of the act.
Illustration With Z’s consent, A, a surgeon, performs an operation on Z even though he is aware that it might potentially kill him. Z is suffering from a terrible condition, but A doesn’t mean to kill him; instead, he is acting in good faith to help Z. A hasn’t broken any laws.