The Law Code of Yājñavalkya 1.10.106

1.10.106

piṇḍapitṛyajñakalpātideśena caruśrapaṇasadbhāve agnaukaraṇaśiṣṭacaruśeṣeṇa saha sarvam annam upādāyāgnisaṃnidhau piṇḍān dadyāt | tadabhāve brāhmaṇārthaṃ kṛtam annaṃ sarvam upādāya satilaṃ tilamiśraṃ dakṣiṇāmukha ucchiṣṭasaṃnidhau piṇḍapitṛyajñakalpena piṇḍān dadyāt || 1.242 ||

By extension of the procedure of the piṇḍapitṛyajña, if a boiled oblation has been cooked, he should take all the food along with the remainder of the boiled oblation left over from the offering into the fire, and give the rice balls near the fire. In the absence of that, taking all the food prepared for the Brahmins, mixed with sesame, facing south, he should give the rice balls near the leavings according to the procedure of the piṇḍapitṛyajña. (1.242)