law: Negotiable Instruments Act, 1881 
  120. Estoppel against denying original validity of
  
  instrument 
  No maker of a promissory note, and no drawer of a bill of
  
  exchange or cheque, and no acceptor of a bill of exchange for the honor of the
  
  drawer shall, on proof of the protest, presume the fact of dishonor, unless and
  
  until validity of the instrument as originally made or drawn.