Vishnupurana 4.6.46

4.6.46

ūcuś cainam agnim āmnāyānusārī bhūtvā tridhā kṛtvorvaśīsalokatāmanoratham uddiśya samyag yajethās tato 'vaśyam abhilaṣitam avāpsyasīty uktas tām agnisthālīm ādāyājagāma antar aṭavyām acintayad aho me 'timūḍhatā yad agnisthalī mayānītā norvaśīti |
athainām aṭavyām evāgnisthālīṃ tatyāja svapuraṃ cājagāma ||

After he had spoken this the Gandharvas brought to him a vessel with fire and said,—"Take this fire and according to the precepts of the Vedas divide it into three parts: then offer oblation to it for Urvasi and your desires shall thus be gratified". The Gandharvas having said this, the king took the vessel and went away. Then coming to a forest he thought—"Oh, what stupid I am; I have brought this vessel but not Urvasi". Then leaving the vessel there he came back to his capital. When half the night had passed he awoke and thought—"The Gandharvas conferred upon me this vessel of fire to enable me to live with Urvasi. I have left that in the forest. I shall go there to bring it". Having said this he went there but did not find the vessel. Then beholding a young Ashwattha tree growing out of a Sami plant he argued within himself—"I left here a vessel of fire and I now see a young Ashwattha tree growing out of a Sami plant. I shall take this type of fire to my capital and having created fire by their attrition I will worship it".