Sadh Vaishnava Sampradaya or Sadh Vaishnavism (IAST: Sādh Vaiṣṇavism), (popularly known as Madhva Sampradaya or Madhva tradition), also known as Bhagavata Sampradaya, Madhva Vaishnavism, is a denomination within the Vaishnavism tradition of Hinduism, founded by the thirteenth century philosopher Madhvacharya. It is a movement in Hinduism that developed during its classical period around the beginning of the Common Era. Philosophically, Madhva tradition is aligned with Dvaita Vedanta, and regards Madhvacharya as its founder or reformer.