The Great Epic of the Bhārata dynasty 3.85.19

3.85.19

pavitro maṅgalīyaśca khyāto loke sanātanaḥ |
kedāraśca mataṅgasya mahānāśrama uttamaḥ || 19 ||

It is there that the soul of all things, the Grandsire, had, in olden days, performed his sacrifice, and it is for this, O chief of the Bharata race, that the place hath come to be called Prayaga. In this direction, O foremost of kings, lieth the excellent asylum of Agastya, O monarch, and the forest called Tapasa, decked by many ascetics. And there also is the great tirtha called Hiranyavinda on the Kalanjara hills, and that best of mountains called Agastya, which is beautiful, sacred and auspicious. In that quarter, O descendant of the Kuru race, is the mountain called Mahendra, sacred to the illustrious Rama of the Bhrigu race. There, O son of Kunti, the Grandsire performed sacrifices of yore. There, O Yudhishthira, the sacred Bhagiratha entereth a lake and there also, O king, is that sacred river known by the name of the merit-bestowing Brahmasara, whose banks are inhabited by persons whose sins have been washed away, and whose sight alone produceth merit. In that direction also lieth the high-souled Matanga's excellent asylum, called Kedara which is sacred and auspicious and celebrated over the world. And there also is the mountain called Kundoda, which is so delightful and abounding in fruits and roots and waters, and where the king of the Nishadhas (Nala) had slaked his thirst and rested for a while. In that quarter also is the delightful Deva-vana which is graced by ascetics. There also are the rivers Vahuda and Nanda on the mountain's crest.