Śatapatha Brāhmaṇa ("of a hundred paths") 2.5.1.5

2.5.1.5

mahaddha tasthau bhuvaneṣvantariti | prajāpatimevaitadabhyanūktam pavamāno harita āviveśeti diśo vai haritastā ayaṃ vāyuḥ pavamāna āviṣṭastā evaiṣargabhyanūktā tā imāh prajāstathaiva prajāyante yathaiva prajāpatiḥ prajā asṛjatedaṃ hi yadaiva striyai stanāvāpyāyete ūdhaḥ paśūnāmathaiva yajjāyate tajjāyate tāstata stanāvevābhipadya sambhavanti

'The great one (neut.) remained within the worlds'--it is with regard to Pragâpati that this is said.--'The blower (or, purifier) entered the regions'--the regions doubtless are the quarters, and these were indeed entered by that blowing wind: it is with regard to them that this verse was uttered. And in like manner as Pragâpati created these living beings, so they are propagated: for whenever the breasts of woman and the udder of cattle swell, then whatever is born is born; and by resorting to the breasts these (beings) continue to exist.