Garudapurana 2.35.30

2.35.30

agnaukaraṇamucchiṣṭaṃ śrāddhaṃ vai vaiśvadaivikam /
vikiraṃ ca svadhākāraṃ pitṛśabdaṃ na coccaret //

offering into the fire, the leavings of food, the śrāddha to the All-Gods, / the scattered food, the utterance 'svadhā', nor should one utter the word 'pitṛ';