Negotiable Instruments Act, 1881
Negotiable Instruments Act, 1881 — section 120
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 honour of the drawer, shall, in a suit thereon by a holder in due course, be permitted to deny the validity of the instrument as originally made or drawn.
This is the text of the provision as enacted. It is legal information, not legal advice, and it cannot account for the facts of your own matter. For advice on your situation, consult a verified advocate.