In Hindu mythology, a specific celestial nymph (apsara) who is most famed for her affiliation with King Pururavas.
Urvashi agrees to remain with the Pururavas on the condition
that she would never see him nude.
When she is missing from heaven for an extended period of
time, the god Indra observes her absence and devises a plan to bring her back.
He sends numerous lesser deities to kidnap two lambs that
Urvashi adores, and as Pururavas rushes up to reclaim them, a flash of
lightning exposes him nude, and Urvashi flees.
They are separated for a while before reuniting—in some
cases permanently, in others for just one night a year.