The Great Epic of the Bhārata dynasty 1.57.44

1.57.44

gṛhītvā tattadā śyenastūrṇamutpatya vegavān |
javaṃ paramamāsthāya pradudrāva vihaṃgamaḥ || 44 ||

"The hawk, swift of speed, took it from the king and rapidly coursed through the air. While thus passing, the hawk was seen by another of his species. Thinking that the first one was carrying meat, the second one flew at him. The two fought with each other in the sky with their beaks. While they were fighting, the seed fell into the waters of the Yamuna. And in those waters dwelt an Apsara of the higher rank, known by the name of Adrika, transformed by a Brahmana's curse into a fish. As soon as Vasu's seed fell into the water from the claws of the hawk, Adrika rapidly approached and swallowed it at once. That fish was, some time after, caught by the fishermen. And it was the tenth month of the fish's having swallowed the seed. From the stomach of that fish came out a male and a female child of human form. The fishermen wondered much, and wending unto king Uparichara (for they were his subjects) told him all. They said, 'O king, these two beings of human shape have been found in the body of a fish!' The male child amongst the two was taken by Uparichara. That child afterwards became the virtuous and truthful monarch Matsya.