Mbh 9.49.1b

Endued with great effulgence, Varuna, the highly blessed son of Aditi, had in days of yore performed in that tirtha the Rajasuya sacrifice, O lord of Earth! Having in battle subjugated both men and celestials and Gandharvas and Rakshasas, Varuna, O king, that slayer of hostile heroes, performed his grand sacrifice in that tirtha. Upon the commencement of that foremost of sacrifices, a battle ensued between the gods and the Danavas inspiring the three worlds with terror. After the completion of that foremost of sacrifices, the Rajasuya (of Varuna), a terrible battle, O Janamejaya, ensued amongst the Kshatriyas. The ever-liberal and puissant Baladeva having worshipped the Rishis there, made many presents unto those that desired them. Filled with joy and praised by the great Rishis, Baladeva, that hero ever decked with garlands of wild flowers and possessed of eyes like lotus leaves, then proceeded to the tirtha called Aditya. There, O best of kings, the adorable Surya of great splendour, having performed a sacrifice, obtained the sovereignty of all luminous bodies (in the universe) and acquired also his great energy. There, in that tirtha situated on the bank of that river, all the gods with Vasava at their head, the Viswedevas, the Maruts, the Gandharvas, the Apsaras, the Island-born (Vyasa), Suka, Krishna the slayer of Madhu, the Yakshas, the Rakshasas, and the Pisachas, O king, and diverse others, numbering by thousands, all crowned with ascetic success, always reside. Indeed in that auspicious and sacred tirtha of the Sarasvati, Vishnu himself, having in days of yore slain the Asuras, Madhu and Kaitabha, had, O chief of the Bharatas, performed his ablutions. The island-born (Vyasa) also, of virtuous soul, O Bharata, having bathed in that tirtha, obtained great Yoga powers and attained to high success. Endued with great ascetic merit, the Rishi Asita-Devala also, having bathed in that very tirtha with soul rapt in high Yoga meditation, obtained great Yoga powers."