Before any person signs a cheque in accordance with
section 46, he shall satisfy himself that the sum for which the cheque is drawn is either--
(a) required for a purpose or work specifically sanctioned by the proper authority and covered by a current budget-grant, or
(b) required for any payment referred to or specified in section 47.
(a) required for a purpose or work specifically sanctioned by the proper authority and covered by a current budget-grant, or
(b) required for any payment referred to or specified in section 47.