Mahabharata 3.50.26

3.50.26

damayanti nalo nāma niṣadheṣu mahīpatiḥ |
aśvinoḥ sadṛśo rūpe na samāstasya mānuṣāḥ || 26 ||

And there he saw a number of swans furnished with golden wings, wandering in those woods. And from among them he caught one with his hands. And thereupon the sky-ranging one said unto Nala. 'Deserve I not to be slain by thee. O king. I will do something that is agreeable to thee. O king of the Nishadhas. I will speak of thee before Damayanti in such a way that she will not ever desire to have any other person (for her lord).' Thus addressed, the king liberated that swan. And those swans then rose on their wings and went to the country of the Vidarbhas. And on arriving at the city of the Vidarbhas the birds alighted before Damayanti, who beheld them all. And Damayanti in the midst of her maids, beholding those birds of extraordinary appearance was filled with delight, and strove without loss of time to catch those coursers of the skies. And the swans at this, before that bevy of beauties, fled in all directions. And those maidens there pursued the birds, each (running) after one. And the swan after which Damayanti ran, having led her to a secluded spot, addressed her in human speech, saying, O Damayanti, there is a king amongst the Nishadhas named Nala. He is equal unto the Aswins in beauty, not having his peer among men. Indeed, in comeliness, he is like Kandarpa himself in his embodied form. O fair-complexioned one, O thou of slender waist, if thou becomest his wife, thy existence and this thy beauty may be of purpose.