law: Railways Act, 1989
  55. Prohibition against traveling without pass or
  
  ticket.  
  (1) No person shall enter or remain in any carriage on a railway
  
  for the purpose of traveling therein as a passenger unless he his with him a
  
  proper pass or ticket or obtained permission of a railway servant authorized
  
  this behalf for such travel.
  (2) A person obtaining permission under sub-section (1) shall
  
  ordinarily get a certificate from the railway servant referred to in that
  
  sub-section that he has been permitted to travel in such carriage on condition
  
  that he subsequently pays the fare payable for the distance to be traveled.