Śatapatha Brāhmaṇa ("of a hundred paths") 6.5.2.16

6.5.2.16

tāsāmagreṣu stanānunnayanti | etadvai devā imāṃlokānukhāṃ kṛtvaitai stanaiḥ sarvānkāmānaduhata tathaivaitadyajamāna imāṃlokānukhāṃ kṛtvaitai stanaiḥ sarvānkāmānduhai

At their tops they form nipples; for the gods, having made these worlds, the fire-pan, drew forth for themselves from these nipples all (objects of) their desires; and in like manner the Sacrificer, having made these worlds, the fire-pan, draws forth from these nipples all his desires.