law: Companies Act, 1956
  Sec 61    -     Terms
  
  of contract mentioned in prospectus or statement in lieu of prospectus, not to
  
  be varied.
  A company shall not, at any time, vary the terms of a contract
  
  referred to in the prospectus or statement in lieu of prospectus, except
  
  subject to the approval of, or except on authority given by, the company in
  
  general meeting.