(2)A Government servant who is permitted to undergo a course of instruction or training abroad and is treated as on duty under F.R. (9)(6)(b) during the period of such instruction or training shall be entitled to draw during the first six months of such training City Compensatory Allowance and during the entire period of such training House Rent Allowance at the rates admissible to him from time to time at the station from where he was deputed abroad for training subject to the production of the relevant certificate prescribed below: