law: 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.
   Illustrations 
  (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.