Section 35(1)(ii) in Rajasthan Rural Ayurvedic, Unani, Homoeopathy and Naturopathy Subordinate Service Rules, 2008
(ii)the Appointing Authority may, if it so thinks fit in case of persons belonging to Scheduled Castes or Scheduled Tribes, as the case may be, extend the period of probation by a period not exceeding one year at a time and a total extension not exceeding three years.