Shatapatha Brahmana 8.7.3.20

8.7.3.20

nānopadadhāti | nānā hi vāyuśca dyauśca sakṛtsādayati samānaṃ tatkaroti samānaṃ hyāyuśca prāṇaśca te vā ubhe eva śarkare bhavata ubhe svayamātṛṇe samānaṃ hyevāyuśca prāṇaścāthaine sūdadohasādhivadati prāṇo vai sūdadohāḥ prāṇeṇaivaine etatsaṃtanoti saṃdadhāti

Separately he lays them down, for separate are wind and sky; and once only he 'settles' them: he thereby makes them the same, for vital power and vital air are the same. They are both of them stones and both of them naturally-perforated; for vital power and vital air are the same. He then pronounces the Sûdadohas over them,--the Sûdadohas means vital air; he thus makes them continuous, joins them together by means of the vital air.