law: Specific Relief Act, 1963
  33. Power to require benefit to be restored or
  
  compensation to be made when instrument is cancelled or is successfully
  
  resisted as being void or voidable
  (1) On adjudging the cancellation of an instrument, the court
  
  may require the party to whom such relief is granted, to restore, so far as may
  
  be any benefit which he may have received from the other party and to make any
  
  compensation to him which justice may require.
  (2) Where a defendant successfully resists any suit on the
  
  grounds-
  (a) that the instrument sought to be enforced
  
  against him in the suit is voidable, the court may if the  defendant has
  
  received any benefit under the instrument from the other party, require him to
  
  restore, so far as may be, such benefit to that party or to make compensation
  
  for it.
  (b) that the agreement sought to be enforced
  
  against him in the suit is void by reason of his not having been competent to
  
  contract under section 11 of the Indian Contract Act, 1872, the court may, if
  
  the defendant has received any benefit under the agreement from the other
  
  party, require him to restore, so far as may be, such benefit to that party, to
  
  the extent to which he or his estate has benefited thereby.