Sri Raghavendra Swamy, who is believed to be the third incarnation of Prahlada Rao, raised the doctrine of Madhva Vedike as a follower of Acharya Madhava. The idol Guru of the Karnataka people, Mahima Purush Sri Raghavendra Swami of Mantralayam, is been called as Rayaru, Gururayaru, Gururajaru by devotees. To know more about Mantralayam, watch this video