law: Specific Relief Act, 1963
  31. When cancellation may be ordered
  (1) Any person against whom a written instrument is void or
  
  voidable, and who has reasonable apprehension that such instrument, if left
  
  outstanding may cause him serious injury, may sue to have it adjudged void or
  
  voidable; and the court may, in its discretion, so adjudge it and order it to
  
  be delivered up and cancelled.
  (2) If the instrument has been registered under the Indian
  
  Registration Act, 1908, the court shall also send a copy of its decree to the
  
  officer in whose office the instrument has been so registered; and such officer
  
  shall note on the copy of the instrument contained in his books the fact of its
  
  cancellation.