Śatapatha Brāhmaṇa ("of a hundred paths") 8.4.3.20

8.4.3.20

tā vā etāḥ | saptadaśeṣṭakā upadadhāti saptadaśo vai saṃvatsaraḥ prajāpatiḥ sa prajanayitā tadetena vai saptadaśena saṃvatsareṇa prajāpatinā prajanayitraitāḥ prajāḥ prājanayadyatprājanayadasṛjata tadyadasṛjata tasmātsṛṣṭayastāḥ sṛṣṭvātmanprāpādayata tathaivaitadyajamāna etena saptadaśena saṃvatsareṇa prajāpatinā prajanayitraitāḥ prajāḥ prajanayati tāḥ sṛṣṭvātmanprapādayate retaḥsicorvelayā pṛṣṭayo vai retaḥsicau madhyamu pṛṣṭayo madhyata evāsminnetāḥ prajāḥ prapādayati sarvata upadadhāti sarvata evāsminnetāḥ prajāḥ prapādayati

These, then, are seventeen bricks he lays down,--the year, Pragâpati, is seventeenfold, he is the progenitor: it is thus by this seventeenfold year, by Pragâpati, the progenitor, that he caused these creatures to be generated. And what he generated, he created; and inasmuch as he created (srig), therefore they are called creations (srishti). Having created them, he made them enter his own self: and in like manner does the Sacrificer now cause these creatures to be generated by that seventeenfold year, by Pragâpati, the progenitor; and having created them, he makes them enter his own self. On the range of the Retahsik (he lays down these bricks): the Retahsik being the ribs, and the ribs the middle (of the body), it is in the very middle that he causes these creatures to enter him. He lays them on all sides: from all sides he thus makes these creatures to enter him.