law: Indian Evidence Act, 1872 
  38. Relevancy of statements as to any law contained in
  
  law-books
  When the Court has to
  
  form an opinion as to a law of any country, any statement of such law contained
  
  in a book purporting to be printed or published under the authority of the
  
  Government of such country and to contain any such law, and any report of a
  
  ruling of the Courts of such country contained in a book purporting to be a
  
  report of such rulings, is relevant.