Garudapurana 2.15.62

2.15.62

tāvadvṛddhiśca kartavyā yāvatpiṇḍaṃ daśāhikam /
puttreṇa hi kriyā kāryā bhāryayā tadabhāvataḥ //

An increase [of water-handfuls] should be made as long as the ten-day rice-ball offering lasts. / The rite must be performed by the son, or in his absence by the wife;