123. Any officer of the Public Service of the Government of India or of any of the Provinces, at the establishment of the Commonwealth, who is retained in the service of the Commonwealth, or assigned to that of a Province, shall retain all his existing rights, and shall be entitled to retire from the service at the time at which he would have been entitled by law to retire, and on the pension or retiring allowance to which he would have been entitled by law in like circumstances, if the Commonwealth had not been established.
