Mbh 1.67.9a

“Sura, the foremost of the Yadus, was the father of Vasudeva. He had a daughter called Pritha, who for her beauty, was unrivalled on earth. And Sura, having promised in the presence of fire that he would give his firstborn child to Kuntibhoja, the son of his paternal aunt, who was without offspring, gave his daughter unto the monarch in expectation of his favours. Kuntibhoja thereupon made her his daughter. And she became, thenceforth, in the house of her (adoptive) father, engaged in attending upon Brahmanas and guests. One day she had to wait upon the wrathful ascetic of rigid vows, Durvasa by name, acquainted with truth and fully conversant with the mysteries of religion. And Pritha with all possible care gratified the wrathful Rishi with soul under complete control. The holy one, gratified with the attentions bestowed on him by the maiden, told her, ‘I am satisfied, O fortunate one, with thee! By this mantra (that I am about to give thee), thou shall be able to summon (to thy side) whatever celestials thou likest. And, by their grace, shall thou also obtain children.’ Thus addressed, the girl (a little while after), seized with curiosity, summoned, during the period of her maiden-hood, the god Surya. And the lord of light thereupon made her conceive and begot on her a son who became the first of all wielders of weapons. From fear of relatives she brought forth in secrecy that child who had come out with ear-rings and coat of mail. And he was gifted with the beauty of a celestial infant, and in splendour was like unto the maker of day himself. And every part of his body was symmetrical and well-adorned. And Kunti cast the handsome child into the water. But the child thus thrown into the water was taken up by the excellent husband of Radha and given by him to his wife to be adopted by her as their son. And the couple gave him the name of Vasusena, by which appellation the child soon became known all over the land.