Section 1137(f) in Police Regulations, Bengal , 1943
(f)All pay cheques, duly receipted on the reverse, shall be defaced and attached by the accountant to the duplicate in the cheque book. The receipt cheques for money sent to police-stations and other offices shall also be attached to the duplicate pay cheque. Receipts for money orders and treasury chalans shall be filed with the pay cheques in the same way.