Section 41A(1) in The Banking Regulation Act, 1949
(1)Within fifteen days from the date of the winding up order of a banking company or where the winding up order has been made before the commencement of the Banking Companies (Second Amendment) Act, 1960 (37 of 1960), within one month from such commencement, the official liquidator shall, for the purpose of making an estimate of the debts and liabilities of the banking company (other than its liabilities and obligations to its depositors), by notice served in such manner as the Reserve Bank may direct, call upon-(a)every claimant entitled to preferential payment under section 530 of the Companies Act, 1956 (1 of 1956), and(b)every secured and every unsecured creditor, to send to the official liquidator within one month from the date of the service of the notice a statement of the amount claimed by him.