Matsyapurana 141.72

141.72

teṣāṃ lokāntarasthānāṃ bāndhavairnāmagotrataḥ
bhūmāvasavyaṃ darbheṣu dattāḥ piṇḍāstrayastu vai
prāptāṃstu tarpayantyeva pretasthāneṣvadhiṣṭhitān //

The oblations of three balls of rice offered in the name of the friends that are suffering in hells reach them and are taken by them which give them relief and satisfaction The kinsmen and sons, while offering oblations should offer them on the Kuśa grass strewn on the earth, they are to recite their names and gotras and have their sacred thread on their right shoulders—71