Mahabharata Adi Parva Chapter 104:3

Mahabharata Adi Parva Chapter 104:3 The blind old man drifting along the stream on that raft, passed through the territories of many kings. One day a king named Vali conversant with every duty went to the Ganges to perform his ablutions. And as the monarch was thus engaged, the raft to which the Rishi was tied, approached him. And as it came, the king took the old man. The virtuous Vali, ever devoted to truth, then learning who the man was that was thus saved by him, chose him for raising up offspring. And Vali said, 'O illustrious one, it behoveth thee to raise upon my wife a few sons that shall be virtuous and wise.' Thus addressed, the Rishi endued with great energy, expressed his willingness. Thereupon king Vali sent his wife Sudeshna unto him. But the queen knowing that the latter was blind and old went not unto him, she sent unto him her nurse. And upon that Sudra woman the virtuous Rishi of passions under full control begat eleven children of whom Kakshivat was the eldest. And beholding those eleven sons with Kakshivat as the eldest, who had studied all the Vedas and who like Rishis were utterers of Brahma and were possessed of great power, king Vali one day asked the Rishi saying, 'Are these children mine?' The Rishi replied, 'No, they are mine. Kakshivat and others have been begotten by me upon a Sudra woman. Thy unfortunate queen Sudeshna, seeing me blind and old, insulted me by not coming herself but sending unto me, instead, her nurse.' The king then pacified that best of Rishis and sent unto him his queen Sudeshna. The Rishi by merely touching her person said to her, 'Thou shalt have five children named Anga, Vanga, Kalinga, Pundra and Suhma, who shall be like unto Surya (Sun) himself in glory. And after their names as many countries shall be known on earth. It is after their names that their dominions have come to be called Anga, Vanga, Kalinga, Pundra and Suhma.' "It was thus that the line of Vali was perpetuated, in days of old, by a great Rishi. And it was thus also that many mighty bowmen and great car-warriors wedded to virtue, sprung in the Kshatriya race from the seed of Brahmanas. Hearing this, O mother, do as thou likest, as regards the matter in hand.'"