Śatapatha Brāhmaṇa ("of a hundred paths") 4.3.1.24

4.3.1.24

athāto gṛhṇātyeva | indrāgnī āgataṃ sutaṃ gīrbhirnabho vareṇyam | asya pātaṃ dhiyeṣitā | upayāmagṛhīto 'sīndrāgni yāṃ tvaiṣa te yonirindrāgnibhyāṃ tveti sādayatīndrāgnibhyāṃ hyenaṃ gṛhṇāti

He now draws it from that (dronakalasa trough) with (Vâg. S. VII, 3, 1; Rig-veda III, 12, 1), 'O Indra and Agni, through our songs come ye hither to the Soma, to the agreeable fume: drink thereof, urged by our hymn!--Thou art taken with a support: thee to Indra and Agni!'--with 'This is thy womb: thee to Indra and Agni!' he deposits it (on the mound), for it is for Indra and Agni that he draws it.