Atharvaveda 6.22

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

Ye make the waters rich in milk, the herbs propitious, when ye bestir yourselves, O golden-backed Maruts; do ye lavish (pinv) both sustenance and good-will there, where, O manly Maruts, ye pour honey.

Water-swimming [are] the Maruts; send ye that rain which shall fill all the hollows; the gláhā shall bestir itself, like a girl that is thrust, thrusting the éru, like wife with husband.