Śatapatha Brāhmaṇa ("of a hundred paths") 7.1.1.7

7.1.1.7

yadvevoṣānnivapati | prajāpatiḥ prajā asṛjatā tā nānolbā asṛjata tā na samajānata so 'kāmayata saṃjānīranniti tāḥ samānolbā akarottāsāmūṣānulbamakarottāḥ samajānata tasmādapyetarhi samānolbāḥ sameva jānate devaiḥ samānolbo 'sānītyu vai yajate yo yajate tadyadūṣānnivapati devaireva tatsamānolbo bhavati

And again why he scatters saline soil. Pragâpati created creatures; he created them with different kinds of amnions: they did not agree together. He desired, 'May they agree together!' He made them to be of the same (kind of) amnion: hence even to this day, being of equal amnions, they agree together. And he who offers, offers thinking, 'May I be (born) with the same (kind of) amnion as the gods!' and when he scatters saline salt (in the hearth-site) he thereby becomes of equal amnion with the gods.