Shatapatha Brahmana 7.1.1.15

7.1.1.15

asthīni vai pariśritaḥ | prāṇaḥ sūdadohā na vā asthiṣu prāṇo 'styekena yajuṣā bahvīriṣṭakā upadadhātyekaṃ hyetadrūpaṃ yadāpo 'tha yadbahvyaḥ pariśrito bhavanti bahvyo hyāpaḥ

For the enclosing-stones are the bones, and the Sûdadohas is the breath; and there is no breath in the bones. With one and the same formula he lays down many bricks, for of one and the same form are the waters; and as to there being many enclosing-stones, it is because there are many waters.