It reads thus: " Notwithstanding anything in the foregoing provisions of this Part or in any other provisions of this Constitution, any State specified in Part B of the First Schedule which before the commencement of this Constitution was levying any tax or duty on the import of goods into the State from other States or on the export of goods from the State to other States may, if an agreement in that behalf has been entered into between the Government of India and the Government of that State, continue to levy and collect such tax or duty subject to the terms of such agreement and for such period not exceeding ten years from the commencement of this Constitution as may be specified in the agreement: Provided that the President may at any time after the expiration of five years from such commencement terminate or modify any such agreement if, after consideration of the report of the Finance Commission constituted under article 280, he thinks it necessary to do so." This Article has been subsequently deleted by section 29 and Schedule to the Constitution (Seventh Amendment) Act, 1956, but its initial inclusion in Part XIII throws some light on the scope of article 301.