Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.1.22

2.3.1.22

saiṣaikāhutirevāgre | yāmevāmūm prajāpatirajuhodatha yadeta etatpaścevādhriyantāgniryo 'yam pavate sūryastasmādeṣā dvitīyāhutirhūyate

Now the first of these libations, doubtless, is the same as that which Pragâpati offered in the beginning; and as those (gods) thereupon continued (to sacrifice),--namely, Agni, that blower (Vâyu), and Sûrya,--so this second libation is offered.