Bhai Changa, a Bhatra scion of Madhav of Ceylon (Sri Lanka), was a devotee of Guru Nanak. He converted the residence of Madhav into a dharamshala and started imparting instruction in the teachings of the Sikh faith. His name is mentioned in "Haqiqat Rah Muqam," an apocryphal composition included in Bhai Banno`s bir, i.e. a recension of the Guru Granth Sahib prepared by Bhai Banno, a Sikh contemporary of Guru Arjan.
2. Mrigind, Makhan Singh, Itihasak-Tribaini, Patiala, 1977.