Section 6(1)(b) in Government Savings Promotion General Rules, 2018
(b)the Permanent Account Number or Form 60 as defined in the Income Tax Rules, 1962: Provided that if an individual does not submit the Permanent Account Number at the time of opening an account, he shall submit the same to the Accounts Office within a period of six months from the date of the opening of the account and if a depositor who has already opened an account prior to the date of this notification and has not already submitted his Permanent Account Number to the Accounts Office, he shall do so within a period of six months from the date of this notification and in the event of the failure of the depositor to submit the Permanent Account Number within the specified period of six months, his account shall cease to be operational till the time he submits the Permanent Account Number to the Accounts Office;