Mahabharata Shalya Parva Chapter 38:2

Mahabharata Shalya Parva (Gada Yuddha Parva) Chapter 38:2 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. And because the seven mingled together at that spot, therefore is that tirtha known on Earth by the name of Sapta Sarasvati. Thus have I told thee of the seven Sarasvatis, according to their names. I have also told thee of the sacred tirtha called Sapta Saraswat. Listen now to a great feat of Mankanaka, who had from his youth led the life of a brahmacari. While employed in performing his ablutions in the river, he beheld (one day), O Bharata, a woman of faultless limbs and fair brows, bathing in the river at will, her person uncovered. At this sight, O monarch, the vital seed of the Rishi fell unto the Sarasvati. The great ascetic took it up and placed it within his earthen pot. Kept within that vessel, the fluid became divided into seven parts. From those seven portions were born seven Rishis from whom sprang the (nine and forty) Maruts. The seven Rishis were named Vayuvega, Vayuhan, Vayumandala, Vayujata, Vayuretas, and Vayuchakra of great energy. Thus were born these progenitors of the diverse Maruts. Hear now a more wonderful thing, O king, a fact exceedingly marvellous on Earth, about the conduct of the great Rishi, which is well known in the three worlds. In days of yore, after Mankanaka had become crowned with success, O king, his hand, on one occasion, became pierced with a Kusa blade. Thereupon, a vegetable juice came out of the wound (and not red blood). Seeing that vegetable juice, the Rishi became filled with joy and danced about on the spot. Seeing him dance, all mobile and immobile creatures, O hero, stupefied by his energy, began to dance. Then the gods with Brahman at their head, and the Rishis possessed of wealth of asceticism, O king, all went to Mahadeva and informed him of the act of the Rishi (Mankanaka).