Śatapatha Brāhmaṇa ("of a hundred paths") 3.6.2.8

3.6.2.8

sā ha kadrūruvāca | ātmānaṃ vai tvājaiṣaṃ divyasau somastaṃ devebhya āhara tena devebhya ātmānaṃ niṣkrīṇīṣveti tatheti sā candāṃsi sasṛje sā gāyatrī divaḥ somamāharat

Then said Kadrû, 'Verily I have won thine own self; yonder is Soma in the heaven: fetch him hither for the gods, and thereby redeem thyself from the gods!'--'So be it!' She brought forth the metres; and that Gâyatrî fetched Soma from heaven.