Śatapatha Brāhmaṇa ("of a hundred paths") 3.8.3.32

3.8.3.32

sa juhoti | ghṛtaṃ ghṛtapāvānaḥ pibata vasāṃ vasāpāvānaḥ pibatāntarikṣasya havirasi svāhetyetena vaiśvadevena yajuṣā juhoti vaiśvadevaṃ vā antarikṣaṃ tadyadenenemāḥ prajāḥ prāṇatyaścodānatyaścāntarikṣamanucaranti tena vaiśvadevaṃ vaṣaṭkṛte juhoti yāni juhvāmavadānāni bhavanti

He offers with (Vâg. S. VI, 19), 'Drink the ghee, ye drinkers of ghee! Drink the gravy, ye drinkers of gravy! thou art the havis of the air, Hail!' With this prayer to the All-gods he offers, for the air belongs to the All-gods: because creatures move about here in the air breathing in and breathing out therewith, therefore it belongs to the All-gods. As the Vashat (of the offering-prayer for the meat portions) is pronounced, he offers the portions that are in the guhû.