Mbh 9.38.2b

Even thus that foremost of rivers, the Sarasvati, made her appearance at Pushkara for the sake of the Grandsire and for gratifying the Munis. (At another time), O king, many Munis, mustering together at Naimisha, took up their residence there. Delightful disquisition occurred among them, O king, about the Vedas. There where those Munis, conversant with diverse scriptures, took up their abode, there they thought of the Sarasvati. Thus thought of, O monarch, by those Rishis performing a sacrifice, the highly blessed and sacred Sarasvati, for rendering assistance, O king, to those high-souled Munis assembled together, made her appearance at Naimisha and came to be called Kanchanakshi. That foremost of rivers, worshipped by all, thus came there, O Bharata! While (king) Gaya was engaged in the performance of a great sacrifice at Gaya, the foremost of rivers, Sarasvati, summoned at Gaya's sacrifice (made her appearance there). The Rishis of rigid vows that were there, named this form of hers at Gaya as Visala. That river of swift current flows from the sides of the Himavat. Auddalaka had also, O Bharata, performed a sacrifice. A large concourse of Munis had been gathered there. It was on that sacred region, the northern part of Kosala, O king, that the sacrifice of high-souled Auddalaka was performed. Before Auddalaka began his sacrifice, he had thought of the Sarasvati. That foremost of rivers came to that region for the sake of those Rishis. Worshipped by all those Munis clad in barks and deer-skins she became known by the name of Manorama, as those Rishis mentally called her. While, again, the high-souled Kuru was engaged in a sacrifice at Kurukshetra, that foremost of rivers, the highly blessed Sarasvati, made her appearance there. Summoned, O monarch, by the high-souled Vasishtha (who assisted Kuru in his sacrifice), the Sarasvati, full of celestial water appeared at Kurukshetra under the name of Oghavati.