Atharvaveda 11.1.31

11.1.31

babhrér adhvaryo múkham etád ví mr̥ḍḍhy ā́jyāya lokáṃ kr̥ṇuhi pravidvā́n |
ghr̥téna gā́trā́nu sárvā ví mr̥ḍḍhi kr̥ṇvé pánthāṃ pitŕ̥ṣu yáḥ svargáḥ ||31||

Wipe off, O serving priest (adhvaryú), this face of the bearing one (? babhrí); make thou, understanding it, room for the sacrificial butter; wipe off with ghee along all [its] members; I make a road to the Fathers that is heaven-going.