Śatapatha Brāhmaṇa ("of a hundred paths") 3.9.4.12

3.9.4.12

tamabhimṛśati | yatte soma divi jyotiryatpṛthivyāṃ yadurāvantarikṣe tenāsmai yajamānāyoru rāye kṛdhyadhi dātre voca iti yatra vā eṣo 'gre devānāṃ havirbabhūva taddhekṣāṃ cakre maiva sarveṇevātmanā devānāṃ havirbhūvamiti sa etāstisrastanūreṣu lokeṣu vinyadhatta

He touches it with (Vâg. S. VI, 33), 'What light of thine there is in the heavens, O Soma, what on earth, and what in the wide air, therewith make wide room for this sacrificer, for his prosperity: speak thou for the giver!' Now when he (Soma) first became sacrificial food for the gods, he thought within himself, 'I must not become sacrificial food for the gods with my whole self!' Accordingly he deposited those three bodies of his in these worlds.