law: Industries (Development and Regulation) Act, 1951 
  28. Burden of proof in certain cases 
  Where any person is prosecuted for contravening any order made
  
  under section 18G which prohibits him from doing an act or being in possession of
  
  a thing without lawful authority or without a permit, license or other
  
  document, the burden of proving that he has such authority, permit, license or
  
  other document shall be on him.