Mahabharata 13.26.45

13.26.45

mahāhrada upaspṛśya śuddhena manasā naraḥ |
ekamāsaṃ nirāhāro jamadagnigatiṃ labhet || 45 ||

Bathing in the tirtha called Maha-hrada with a purified heart and after observing a fast for one month, one is sure to attain to the end which was the sage Jamadagni's. By exposing oneself to heat in the tirtha called Vindhya, a person devoted to truth and endued with compassion for all creatures should then betake himself to austere penances, actuated by humility. By so doing, he is sure to attain to ascetic success in course of a single month. Bathing in the Narmada as also in the tirtha known by the name of Surparaka, observing a fast for a full fortnight, one is sure to become in one's next birth a prince of the royal line. If one proceeds with restrained senses and a concentrated soul to the tirtha known under the name of Jamvumarga, one is sure to attain to success in course of a single day and night. By repairing to Chandalikasrama and bathing in the tirtha called Kokamukha, having subsisted for sometime on potherbs alone and worn rags for vestments, one is sure to obtain ten maidens of great beauty for one's spouses. One who lives by the side of the tirtha known by the name of Kanya-hrada has never to go to the regions of Yama. Such a person is sure to ascend to the regions of felicity that belong to the celestials. One who bathes with restrained senses on the day of the new moon in the tirtha known by the name of Prabhasa, is sure, O thou of mighty arms, of at once attaining to success and immortality.