146. The Court shall, in respect of every proceeding under this Chapter, on production of Bank's slip or memo having thereon the official mark denoting that the cheque has been dishonoured, presume the fact of dishonour of such cheque, unless and until such fact is disproved.
Negotiable Instruments Act, 1881
Section 146: Bank’s slip prima facie evidence of certain facts
Chapter XVII — Of Penalties in Case of Dishonour of Certain Cheques for Insufficiency of Funds in the Accounts
Source: official text of the Negotiable Instruments Act, 1881.