61. At the establishment of the Commonwealth and after a period of every five years thereafter, a Commission shall be appointed hr the Viceroy in consultation with the Commonwealth and Provincial Cabinets to make recommendations as to the most suitable method of dividing the existing and other possible sources of revenue, or as to other supplementary arrangements between the Commonwealth and Provincial Governments. The recommendations shall be placed before Parliament in the form of a Bill. Provided that the arrangements ·existing at the establishment of the Commonwealth shall continue until the recommendations of the Commission provided for above come into force.
