[Article 76a] Federal Constitution 74 (3) Any matter with respect to which the Legislature of a State is for the time being authorized by Act of Parliament to make laws shall for purposes of Articles 79, 80 and 82 be treated as regards the State in question as if it were a matter enumerated in the Concurrent List. Residual power of legislation 77. The Legislature of a State shall have power to make laws with respect to any matter not enumerated in any of the Lists set out in the Ninth Schedule, not being a matter in respect of which Parliament has power to make laws. Legislation restricting use of rivers 78. In so far as any law made by Parliament or any regulation made in pursuance of such a law restricts the rights of a State or its residents to the use for navigation or irrigation of any river wholly within that State it shall not have effect in that State unless it has been approved by a resolution of the Legislative Assembly of that State supported by a majority of the total number of its members. Exercise of concurrent legislative powers 79. (1) Where it appears to the presiding officer of either House of Parliament or of the Legislative Assembly of any State that a Bill or an amendment to a Bill proposes a change in the law relating to any of the matters enumerated in the Concurrent List, or to any of the matters enumerated in the State List with respect to which the Federation is exercising functions in accordance with Article 94, he shall certify the Bill or amendment for the purposes of this Article. (2) A Bill or amendment certified under this Article shall not be proceeded with until four weeks have elapsed since its publication, unless the presiding officer, being satisfied that the State Governments, or as the case may be, the Federal Government, have been consulted, allows it to be proceeded with on the ground of urgency.