OMkar Parvat has been the site of the Pandava’s Agyatvaas. When he asked Lord Krishna why his suffering, God told him about this Agyatvaas due to Pitrurana. At the same time, he described the law of worship of Shiva on the Rin Mukteshwar, an ancient temple near the Narmada-Kaveri Sangam on Omkar Varavat Parikrama Marg. Pandavas established a Shivling during their Agyatwas by performing penance of Lord Shiva for debt relief. During the Pauranic period, gold lentils were used on the Shivling, later it became important to add gram lentils.
The person who visits the Mamleshwar Linga revolves around the Omkar Parvat, bathes in the Sangam, Faith worships this holy linga in a pure holy sense. Lord Rin-Mukteshwar frees him from all kinds of debts.