Garudapurana 1.219.5

1.219.5

Seeking permission from all the brāhmaṇas representing the gods and the ancestors to perform the śrāddha: / for the seat, "Om, come, O Viśvedevas, hear this invocation of mine; / sit upon this sacred grass. / Om, O Viśvedevas, hear this invocation, ye who are in the atmosphere and ye who abide in heaven; / ye who have Agni as your tongue, or wherever ye be, having seated yourselves on this sacred grass, exhilarate yourselves!" / "Om, let them come"—this is the invocation of the Viśvedevas, the offering of perfumes and so on, / and reciting the confirmation of flawlessness.