(3)leave salary for the first three months of such leave shall be allowed on full average pay in the case of government servants governed by Fundamental Rule 81 or Subsidiary Rule 157 and on full pay which they may be drawing on the date of proceeding on such leave in the case of government servants governed by Fundamental Rule 81-B or subsidiary Rule 157-A. Leave salary for the remaining period of any such leave shall be allowed at half the rates mentioned above;