Atharvaveda 20.67.3

20.67.3

agníṃ hótāram manye dā́svantaṃ vásuṃ sūnúṃ sáhaso jātávedasaṃ vípraṃ ná jātávedasam |
yá ūrdhváyā svadhvaró devó devā́cyā kr̥pā́ |
ghr̥tásya víbhrāṣṭim ánu vaṣṭi śocíṣājúhvānasya sarpíṣaḥ ||3||

I think on Agni, Hotar, the munificent, the gracious Son of strength, who knoweth all that live, as holy Sage who knoweth all. Lord of fair rites, a God with form erected turning to the Gods. He, when the flame hath sprung forth from the holy oil, the offered fatness, longeth for it with his glow.