Mahabharata Vana Parva Chapter 176:2

Mahabharata Vana Parva (Tirtha-yatra Parva)

Mahabharata Vana Parva Chapter 176:2 At this crisis Yudhishthira, the best of pious men, became the protector of Vrikodara and he, of infinite puissance, extricated Bhima whose whole body had been fast gripped by the snake with its folds. And the twelfth year of their sojourn in forests having arrived, those scions of the race of Kuru, blazing in effulgence, and engaged in asceticism, always devoted principally to the practice of archery, repaired cheerfully from that Chitraratha-like forest to the borders of the desert, and desirous of dwelling by the Saraswati they went there, and from the banks of that river they reached the lake of Dwaitabana. Then seeing them enter Dwaitabana, the dwellers of that place engaged in asceticism, religious ordinances, and self-restraining exercises and in deep and devout meditation and subsisting on things ground with stone (for want of teeth) having procured grass-mats and water-vessels, advanced to meet them. The holy fig, the rudaraksha, the rohitaka, the cane and the jujube, the catechu, the sirisha, the bel and the inguda and the karira and pilu and sami trees grew on the banks of the Saraswati. Wandering about with contentment in (the vicinity of) the Saraswati which was, as it were, the home of the celestials, and the favourite (resort) of Yakshas and Gandharvas and Maharshis, those sons of kings lived there in happiness."