In the third avatar of Vishnu, Varaha, God defeated Hiranyaksha and retrieved Bhumidevi from the bottom of the cosmic ocean. The avatar symbolises the resurrection of Earth from a deluge. Vishnu advised Bhumidevi to worship Lord Shiva to grant her stability. Bhumidevi travelled till she found Brahmatirtham beside an Aswatha tree. Bhumidevi established a SivaLingam at this place, for Siva, who grants her unshakeable strength and stability.