Śatapatha Brāhmaṇa ("of a hundred paths") 13.3.4.1

13.3.4.1

sarvābhyo vai devatābhyo'śva ālabhyate yatprājāpatyaṃ kuryādyā devatā apibhāgāstā bhāgadheyena vyardhayecādaṃ dadbhiravakāṃ dantamūlairityājyamavadānā kṛtvā pratyākhyāyaṃ devatābhya āhutīrjuhoti yā eva devatā apibhāgāstā bhāgadheyena samardhayatyaraṇye'nūcyānhutvā dyāvāpṛthivyāmuttamāmāhutiṃ juhoti dyāvāpṛthivyorvai sarvā devatāḥ pratiṣṭhitāstā evaitatprīṇāti devāsurāḥ saṃyattā āsan

Verily, the horse is slaughtered for all the deities: were he to make it one belonging to Pragâpati (exclusively), he would deprive the deities who are co-sharers of their share. Having made ghee (to take the part of) portions (of the horse's body) he makes oblations to the deities in mentioning them one by one with (Vâg. S. XXV, 1-9), 'The Grass (I gratify) with the teeth, the Lotus with the roots of the hair,...:' the deities who are co-sharers he thus supplies with their share. When he has offered the Aranyeऽnûkya (oblations), he offers the last oblation to Heaven and Earth; for all the gods are established in heaven and on earth: it is them he thereby gratifies. Now the gods and the Asuras were contending together.