Śatapatha Brāhmaṇa ("of a hundred paths") 4.4.4.12

4.4.4.12

vayaṃ hi tvā | prayati yajñe asminnagne hotāramavṛṇīmahīha ṛdhagayā ṛdhagutāśamiṣṭhāḥ prajānanyajñamupayāhi vidvāntsvāhetyagnimevaitayā vimuñcatyagniṃ vyavasṛjati

[The sixth with Vâg. S. VIII, 20], 'Thee, O Agni, have we chosen here for our Hotri at the opening of this sacrifice: severally hast thou offered to them, and severally hast thou toiled; well-knowing the sacrifice, draw thou nigh, thou the wise! Hail!' by this (verse) he releases Agni, dismisses Agni.