Section 8(6) in The Post Office Savings Bank General Rules, 1981
(6)The passbook shall, as far as possible, be collected from the Post Office Savings Bank by the depositor on the same day on which it is presented to it under sub-rule (4) and where for any reason, the passbook cannot be returned on the same day, the Post Office Savings Bank shall issue a receipt in lieu thereof and such receipt shall be surrendered by the depositor at the time of collecting the passbook on a subsequent date.
