Atharvaveda 9.10.22

9.10.22

kr̥ṣṇáṃ niyā́naṃ hárayaḥ suparṇā́ apó vásānā dívam út patanti |
táṃ ā́vavr̥trant sádanād r̥tásyā́d íd ghr̥téna pr̥thivī́ṃ vy ū̀duḥ ||22||

Black the descent, the yellow eagles, clothing themselves in waters, fly up to the sky; they have come hither from the seat of righteousness; then, forsooth, with ghee they deluged the earth.