law: Railways Act, 1989
  53. Prohibition against transfer of certain tickets. 
  A ticket issued in the name of a person shall be used only by
  
  that person : 
  
  Provided that nothing contained in this section shall prevent mutual transfer of
  
  a seat or berth by passengers traveling by the same train:
  Provided  further that a railway servant authorized in
  
  this behalf may permit change of a name of a passenger having reserved a seat
  
  or berth subject to, such circumstances as may be prescribed.