Hiranyakeshigrihyasutra 2.4.12.3

2.4.12.3

teṣvavācīnapāṇirdakṣiṇāpavargānpiṇḍāndadāti \ etatte tatāsau \ iti pitre piṇḍaṃ dadāti \ etatte pitāmahāsau \ iti pitāmahāya \ etatte prapitāmahāsau \ iti prapitāmahāya tūṣṇīṃ caturtham \ sa kṛtākṛtaḥ \3\

On that (grass) he puts down, with downward-turned hands, ending in the south, the lumps (of food for the Fathers). To his father he gives his lump with (the words), 'This to thee, father, N.N.!' to the grandfather with (the words), 'This to thee, grandfather, N.N.!' to the great-grandfather with (the words), 'This to thee, great-grandfather, N.N.!' silently a fourth (lump). This (fourth lump) is optional.