Śatapatha Brāhmaṇa ("of a hundred paths") 14.1.2.23

14.1.2.23

sādhave tveti ayam vai sādhuryo'yam pavata eṣa hīmāṃlokāntsiddho'nupavata eṣa u dvitīyaḥ pravargyastadetamevaitatprīṇāti tasmādāha sādhave tveti

With, 'For the efficient one thee' (he takes out the second pot),--the efficient one (sâdhu), doubtless, is he (Vâyu, the wind) that purifies here by blowing, for as a permanent one (siddha) he blows through these worlds; and the second Pravargya is that (god): it is him he thus gratifies, and therefore he says, 'For the efficient one (I take) thee.'