Mahabharata Adi Parva Chapter 94:2

Mahabharata Adi Parva Chapter 94:2 Their mothers, therefore, became angry and slew them all. The procreation of children by Bharata, therefore, became vain. The monarch then performed a great sacrifice and through the grace of Bharadwaja obtained a son named Bhumanyu. And then Bharata, the great descendant of Puru, regarding himself as really possessing a son, installed, O foremost one of Bharata's race, that son as his heir-apparent. And Bhumanyu begat upon his wife, Pushkarini six sons named Suhotra, Suhotri, Suhavih, Sujeya, Diviratha and Kichika. The eldest of them all, Suhotra, obtained the throne and performed many Rajasuyas and horse-sacrifices. And Suhotra brought under his sway the whole earth surrounded by her belt of seas and full of elephants, kine and horses, and all her wealth of gems of gold. And the earth afflicted with the weight of numberless human beings and elephants, horses, and cats, was, as it were, about to sink. And during the virtuous reign of Suhotra the surface of the whole earth was dotted all over with hundreds and thousands, of sacrificial stakes. And the lord of the earth, Suhotra, begat, upon his wife Aikshaki three sons, viz., Ajamidha, Sumidha, and Purumidha. The eldest of them, Ajamidha, was the perpetuator of the royal line. And he begat six sons,—Riksha was born of the womb of Dhumini, Dushmanta and Parameshthin, of Nili, and Jahnu, Jala and Rupina were born in that of Kesini. All the tribes of the Panchalas are descended from Dushmanta and Parameshthin. And the Kushikas are the sons of Jahnu of immeasurable prowess. And Riksha who was older than both Jala and Rupina became king. And Riksha begat Samvarana, the perpetuator of the royal line. And, O king, it hath been heard by us that while Samvarana, the son of Riksha, was ruling the earth, there happened a great loss of people from famine, pestilence, drought, and disease. And the Bharata princes were beaten by the troops of enemies. And the Panchalas setting out to invade the whole earth with their four kinds of troops soon brought the whole earth under their sway. And with their ten Akshauhinis the king of the Panchalas defeated the Bharata prince. Samvarana then with his wife and ministers, sons and relatives, fled in fear, and took shelter in the forest on the banks of the Sindhu extending to the foot of the mountains. There the Bharatas lived for a full thousand years, within their fort. And after they had lived there a thousand years, one day the illustrious Rishi Vasishtha approached the exiled Bharatas, who, on going out, saluted the Rishi and worshipped him by the offer of Arghya. And entertaining him with reverence, they represented everything unto that illustrious Rishi. And after he was seated on his seat, the king himself approached the Rishi and addressed him, saying, 'Be thou our priest, O illustrious one! We will endeavour to regain our kingdom.' And Vasishtha answered the Bharatas by saying, 'Om' (the sign of consent).