18. Act done in good faith for benefit of person who is not baligh or of unsound mind, by or with consent of, guardian etc.

Nothing which is done in good faith for the benefit of a person who is not baligh, or of unsound mind, by or with consent of, either express or implied, the guardian or other person having lawful charge of that person, is an offence by reason of any harm which it may cause, or be intended by the doer to cause, or be known by the doer to be likely to cause, to that person:

Provided that this exception shall not extend to —

the intentional causing of death or the attempting to cause death;

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 hurt or the curing of any disease or infirmity;

the voluntary causing of hurt or the attempting to cause hurt, unless it be for the purpose of preventing death or hurt, or the curing of any disease or infirmity;

the abetment of any offence, to the committing of which offence it would not extend.