law: Arbitration Act 1940
  Section 19
  Determination of Rules of Procedure
  (1) The arbitral tribunal shall not be bound
  
  by the Code of Civil Procedure, 1908 or the Indian Evidence Act, 1872.
  (2) Subject to this Part, the parties are free
  
  to agree on the procedure to be followed by the arbitral tribunal in conducting
  
  its proceedings.
  (3) Failing any agreement referred to in sub-section
  
  (2), the arbitral tribunal may, subject to this Part, conduct the proceedings
  
  in the manner it considers appropriate.
  (4) The power of the arbitral tribunal under
  
  sub-section (3) includes the power to determine the admissibility, relevance, materiality
  
  and weight of any evidence.