Shatapatha Brahmana 4.1.5.17

4.1.5.17

athāto gṛhṇātyeva | yā vāṃ kaśā madhumatyaśvinā sūnṛtāvatī tayā yajñam mimikṣatam upayāmagṛhīto 'syaśvibhyāṃ tvaiṣa te yonirmādhvībhyāṃ tveti sādayati taṃ vai madhumatyarcā gṛhṇāti mādhvībhyāṃ tveti sādayati tadyanmadhumatyarcā gṛhṇāti mādhvībhyāṃ tveti sādayati

Thus he takes (the Âsvina graha) from that (stream of Soma), with (Vâg. S. VII, 11; Rig-veda I, 22, 3), 'Mix ye the sacrifice, O Asvins, with that goad of yours, rich in honey and joyfulness!--Thou art taken with a support! thee for the Asvins!' with 'This is thy womb: thee for the honey-loving (Asvins)!' he deposits it. Now as to why he takes (the graha) with a verse containing (the word) 'honey (madhu),' and deposits it with 'thee for the honey-loving!'