Śatapatha Brāhmaṇa ("of a hundred paths") 5.1.1.4

5.1.1.4

sa bṛhaspatiḥ | savitārameva prasavāyopādhāvatsavitā vai devānām prasavitedam me prasuva tvatprasūta idamujjayānīti tadasmai savitā prasavitā prāsuvattatsavitṛprasūta udajayatsa idaṃ sarvamabhavatsa idaṃ sarvamudajayatprajāpatiṃ hyudajayatsarvamu hyevedam prajāpatisteneṣṭvaitāmevordhvāṃ diśamudakrāmattasmādyaśca veda yaśca naiṣordhvā bṛhaspaterdigityevāhuḥ

Then Brihaspati hasted up to Savitri for his impulsion,--Savitri being the impeller (prasavitri) among the gods--saying, 'Impel this for me, (so that) impelled by thee, I may win this!' Then Savitri, as the impeller, impelled it for him, and impelled by Savitri, he won: he became everything here, he won everything here; for he won Pragâpati, and Pragâpati (the lord of creatures and procreation) indeed is everything here. By offering therewith he (Brihaspati) ascended to that upper region. Therefore who so knoweth, and who so knoweth not,--they say, 'That upper region belongeth to Brihaspati.'