Kathasaritsagara 3.3.14

Then he communicated the order of Vishnu to Indra, who received it with reverent mind, and so the hermit caused Urvaśí to be given to Purúravas. That gift of Urvaśí deprived the inhabitants of heaven of life, but it was to Urvaśí herself an elixir to restore her to life. Then Purúravas returned with her to the earth, exhibiting to the eyes of mortals the wonderful spectacle of a heavenly bride. Thenceforth those two, Urvaśí and that king, remained, so to speak, fastened together by the leash of gazing on one another, so that they were unable to separate. One day Purúravas went to heaven, invited by Indra to assist him, as a war had arisen between him and the Dánavas. In that war the king of the Asuras, named Mayádhara, was slain, and accordingly Indra held a great feast, at which all the nymphs of heaven displayed their skill. And on that occasion Purúravas, when he saw the nymph Rambhá performing a dramatic dance called chalita, with the teacher Tumburu standing by her, laughed. Then Rambhá said to him sarcastically— " I suppose, mortal, you know this heavenly dance, do you not?" Purúravas answered, " From associating with Urvaśí, I knew dances which even your teacher Tumburu does not know." "When Tumburu heard that, he laid this curse on him in his wrath, "Mayest thou be separated from Urvaśí until thou propitiate Krishna." When he heard that curse, Purúravas went and told Urvaśí what had happened to him, which was terrible as "a thunderbolt from the blue." Immediately some Gandharvas swooped down, without the king's seeing them, and carried off Urvaśí, whither he knew not. Then Purúravas, knowing that the calamity was due to that curse, went and performed penance to appease Vishnu in the hermitage of Badariká.

Then he communicated the order of Vishnu to Indra, who received it with reverent mind, and so the hermit caused Urvaśí to be given to Purúravas. That gift of Urvaśí deprived the inhabitants of heaven of life, but it was to Urvaśí herself an elixir to restore her to life. Then Purúravas returned with her to the earth, exhibiting to the eyes of mortals the wonderful spectacle of a heavenly bride. Thenceforth those two, Urvaśí and that king, remained, so to speak, fastened together by the leash of gazing on one another, so that they were unable to separate. One day Purúravas went to heaven, invited by Indra to assist him, as a war had arisen between him and the Dánavas. In that war the king of the Asuras, named Mayádhara, was slain, and accordingly Indra held a great feast, at which all the nymphs of heaven displayed their skill. And on that occasion Purúravas, when he saw the nymph Rambhá performing a dramatic dance called chalita, with the teacher Tumburu standing by her, laughed. Then Rambhá said to him sarcastically— " I suppose, mortal, you know this heavenly dance, do you not?" Purúravas answered, " From associating with Urvaśí, I knew dances which even your teacher Tumburu does not know." "When Tumburu heard that, he laid this curse on him in his wrath, "Mayest thou be separated from Urvaśí until thou propitiate Krishna." When he heard that curse, Purúravas went and told Urvaśí what had happened to him, which was terrible as "a thunderbolt from the blue." Immediately some Gandharvas swooped down, without the king's seeing them, and carried off Urvaśí, whither he knew not. Then Purúravas, knowing that the calamity was due to that curse, went and performed penance to appease Vishnu in the hermitage of Badariká.