Section 46(4)(d) in Tamil Nadu Pension Rules, 1978
(d)When there are no surviving members of the family as in items (i),(ii), (iii) and (iv), of sub-rule (5) of rule 45, the death-cum-gratuity becomes payable to a minor brother or a minor unmarried sister, the payment shall be made to the father or in his absence, the mother of the beneficiary except in a case where the mother happens to be a Muslim lady. In this case too, if there is no surviving parent or the surviving parent happens to be a Muslim lady, the payment, shall be made to the persons producing the guardianship certificate. If any share is payable to a widowed minor sister, the production of guardianship certificate will be necessary.