Rigveda 10.122.3

य॒ज्ञस्य॑ के॒तुं प्र॑थ॒मं पु॒रोहि॑तं ह॒विष्म॑न्त ईळते स॒प्त वा॒जिन॑म् ।शृ॒ण्वन्त॑म॒ग्निं घृ॒तपृ॑ष्ठमु॒क्षणं॑ पृ॒णन्तं॑ दे॒वं पृ॑ण॒ते सु॒वीर्य॑म्॥

yajñasya ketuṃ prathamaṃ purohitaṃ haviṣmanta īḷate sapta vājinam |śṛṇvantamagniṃ ghṛtapṛṣṭhamukṣaṇaṃ pṛṇantaṃ devaṃ pṛṇate suvīryam ||

Our plain-language meaning of this verse is waiting for scholar review.