hurt, done by consent. 87. Act not intended and not known to be likely to cause death or grievous hurt, done by consent.--Nothing which is not intended to cause death, or grievous hurt, and which is not known by the doer to be likely to cause death or grievous hurt, is an offence by reason of any harm which it may cause, or be intended by the doer to cause, to any person, above eighteen years of age, who has given consent, whether express or implied, to suffer that harm; or by reason of any harm which it may be known by the doer to be likely to cause to any such person who has consented to take the risk of that harm. Illustration A and Z agree to fence with each other for amusement. This agreement implies the consent of each to suffer any harm which, in the course of such fencing, may be caused without foul play; and if A, while playing fairly, hurts Z, A commits no offence. 88. Act not intended to person's benefit. cause death, done by consent in good faith for 88. Act not intended to cause death, done by consent in good faith for person's benefit.--Nothing, which is not intented to cause death, 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 any person for whose benefit it is done in good faith, and who has given a consent, whether express or implied to suffer that harm, or to take the risk of that harm. Illustration A, a surgeon, knowing that a particular operation is likely to cause the death of Z, who suffers under the painful complaint, but not intending to cause Z's death, and intending, in good faith, Z's benefit, performs that operation on Z, with Z's consent. A has committed no offence. 89. Act done in good faith for benefit of child or insane person, by or by consent of guardian. 89. Act done in good faith for benefit of child or insane person, by or by consent of guardian.--Nothing which is done in good faith for the benefit of a person under twelve years of age, or of unsound mind, by or by consent, either express or implied, of the guardian or other person having lawful charge of that person, is an offence by reason of