The Bhagavata Purana tells the story of the birth of Urvashi from the sages Nara-Narayana. Once, sages Nara-Narayana were meditating in the holy shrine of Badrinath situated in the Himalayas.
Their penances and austerities alarmed the gods, so Indra, the King of Devas, sent Kamadeva, Vasanta (spring) and apsaras (nymphs) to inspire them with passion and disturb their devotions. The sage Narayana took a flower and placed it on his thigh.
Immediately there sprung from it a beautiful nymph whose charms far excelled those of the celestial nymphs, and made them return to heaven filled with shame and vexation. Narayana sent this nymph to Indra with them, and from her having been produced from the thigh (uru in Sanskrit) of the sage, she was called Urvashi.
http://en.wikipedia.org/wiki/Nara-Narayana
Picture Source:Garuda Purana Community
Their penances and austerities alarmed the gods, so Indra, the King of Devas, sent Kamadeva, Vasanta (spring) and apsaras (nymphs) to inspire them with passion and disturb their devotions. The sage Narayana took a flower and placed it on his thigh.
Immediately there sprung from it a beautiful nymph whose charms far excelled those of the celestial nymphs, and made them return to heaven filled with shame and vexation. Narayana sent this nymph to Indra with them, and from her having been produced from the thigh (uru in Sanskrit) of the sage, she was called Urvashi.
http://en.wikipedia.org/wiki/Nara-Narayana
Picture Source:Garuda Purana Community