Indian Contract Act, 1872
68. Claim for necessaries supplied to person incapable of contracting, or on his account
If a person, incapable of entering into a contract, or anyone whom he is legally bound to support, is supplied by another person with necessaries suited to his condition in life, the person who has furnished such supplies is entitled to be reimbursed from the property of such incapable person.
(a) A supplies B, a lunatic, with necessaries suitable to his condition in life. A is entitled to be reimbursed from B's property.
(b) A supplies, the wife and children of B, a lunatic, with necessaries suitable to their condition in life. A is entitled to be reimbursed from B's property.