Section 91 in Indian Penal Codes
Title: Exclusion of acts which are offences independently of harm caused
The exceptions in sections 87, 88 and 89 do not extend to acts which are offences independently of any harm which they may cause, or be intended to cause, or be known to be likely to cause, to the person giving the consent, or on whose behalf the consent is given. Illustration Causing miscarriage (unless caused in good faith for the purpose of saving the life of the woman) is an offence independently of any harm which it may cause or be intended to cause to the woman. Therefore, it is not an offence “by reason of such harm”; and the consent of the woman or of her guardian to the causing of such miscarriage does not justify the act.
Title: Act done in good faith for benefit of a person without consent
Nothing is an offence by reason of any harm which it may cause to a person for whose benefit it is done in good faith, even without that person’s consent, if the circumstances are such that it is impossible for that person to signify consent, or if that person is incapable of giving consent, and has no guardian or other person in lawful charge of him from whom it is possible to obtain consent in time for the thing to be done with benefit: Provisos—Provided—
(First) — That this exception shall not extend to the intentional causing of death, or the attempting to cause death;
(Secondly) —That this exception shall not extend to the doing of anything which the person doing it knows to be likely to cause death, for any purpose other than the preventing of death or grievous hurt, or the curing of any grievous disease or infirmity;
(Thirdly) -— That this exception shall not extend to the voluntary causing of hurt, or to the attempting to cause hurt, for any purpose other than the preventing of death or hurt;
(Fourthly) —That this exception shall not extend to the abetment of any offence, to the committing of which offence it would not extend. Illustrations
(a) Z is thrown from his horse, and is insensible. A, a surgeon, finds that Z requires to be trepanned. A, not intending Z’s death, but in good faith, for Z’s benefit, performs the trepan before Z recovers his power of judging for himself. A has committed no offence.
(b) Z is carried off by a tiger. A fires at the tiger knowing it to be likely that the shot may kill Z, but not intending to kill Z, and in good faith intending Z’s benefit. A’s ball gives Z a mortal wound. A has committed no offence.
(c) A, a surgeon, sees a child suffer an accident which is likely to prove fatal unless an operation be immediately performed. There is no time to apply to the child’s guardian. A performs the operation in spite of the entreaties of the child, intending, in good faith, the child’s benefit. A has committed no offence.
(d) A is in a house which is on fire, with Z, a child. People below hold out a blanket. A drops the child from the house-top, knowing it to be likely that the fall may kill the child, but not intending to kill the child, and intending, in good faith, the child’s benefit. Here, even if the child is killed by the fall, A has committed no offence. Explanation.—Mere pecuniary benefit is not benefit within the meaning of sections 88, 89 and 92.
Title: Communication made in good faith
No communication made in good faith is an offence by reason of any harm to the person to whom it is made, if it is made for the benefit of that person. Illustration A, a surgeon, in good faith, communicates to a patient his opinion that he cannot live. The patient dies in consequence of the shock. A has committed no offence, though he knew it to be likely that the communication might cause the patient’s death.
Title: Act to which a person is compelled by threats
Except murder, and offences against the State punishable with death, nothing is an offence which is done by a person who is compelled to do it by threats, which, at the time of doing it, reasonably cause the apprehension that instant death to that person will otherwise be the consequence: Provided the person doing the act did not of his own accord, or from a reasonable apprehension of harm to himself short of instant death, place himself in the situation by which he became subject to such constraint. Explanation 1.—A person who, of his own accord, or by reason of a threat of being beaten, joins a gang of dacoits, knowing their character, is not entitled to the benefit of this exception, on the ground of his having been compelled by his associates to do anything that is an offence by law. Explanation 2.—A person seized by a gang of dacoits, and forced, by threat of instant death, to do a thing which is an offence by law; for example, a smith compelled to take his tools and to force the door of a house for the dacoits to enter and plunder it, is entitled to the benefit of this exception.
Title: Act causing slight harm
Nothing is an offence by reason that it causes, or that it is intended to cause, or that it is known to be likely to cause, any harm, if that harm is so slight that no person of ordinary sense and temper would complain of such harm.