Mahabharata 9.37.26

9.37.26

dakṣeṇa yajatā cāpi gaṅgādvāre sarasvatī |
vimalodā bhagavatī brahmaṇā yajatā punaḥ |
samāhūtā yayau tatra puṇye haimavate girau || 26 ||

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. Daksha at one time performed a sacrifice at the source of Ganga. The Sarasvati appeared there under the name of the fast-flowing Surenu. Once again, while Brahman was engaged in a sacrifice on the sacred forest of the Himavat mountains, the adorable Sarasvati, summoned (by him), appeared there. All these seven forms then came and joined together in that tirtha where Baladeva came.