Galavasmriti 1.2: Nirṇayasindhu · Kālasāra · Mahānibandha +1

1.2

sapiṇḍīkaraṇāt prete paitṛkaṃ padam āsthite | āhitāgneḥ sinīvālyāṃ pitṛyajñaḥ pravartate

When the deceased, through the sapiṇḍīkaraṇa rite, has attained the state of an ancestor, / the Pitṛyajña of one who maintains sacred fires proceeds on the new moon day.

When by the sapiṇḍīkaraṇa the departed has reached the ancestors' station, the ancestral sacrifice of one who keeps the fires begins on the Sinīvālī new moon.