Śatapatha Brāhmaṇa ("of a hundred paths") 3.1.4.15

3.1.4.15

atha caturthī juhoti | āpo devīrbṛhatīrviśvaśambhuvo dyāvāpṛthivī uro antarikṣa bṛhaspataye haviṣā vidhema svāhetyeṣā ha nedīyo yajñasyāpāṃ hi kīrtayatyāpo hi yajño dyāvāpṛthivī uro antarikṣeti lokānāṃ hi kīrtayati bṛhaspataye haviṣā vidhema svāheti brahma vai bṛhaspatirbrahma yajña eteno haiṣā nedīyo yajñasya

He then offers the fourth libation, with the text, 'Ye divine, vast, all-soothing Waters! Heaven and Earth, wide Ether! let us render homage unto Brihaspati with offering, hail!' This (libation) truly is nearer to the sacrifice, since he praises the waters, and water is sacrifice. 'Heaven and Earth! wide Ether!' he says, because he thereby praises the worlds. 'Let us render homage unto Brihaspati, with offering, hail!' he says; for Brihaspati is the Brahman, and the sacrifice also is the Brahman: for this reason also this (libation) is nearer to the sacrifice.