Mississippi constitution
Article 4
Section 69

General appropriation bills shall contain only the appropriations to defray the ordinary expenses of the executive, legislative, and judicial departments of the government; to pay interest on state bonds, and to support the common schools. All other appropriations shall be made by separate bills, each embracing but one subject. Legislation shall not be engrafted on the appropriation bills, but the same may prescribe the conditions on which the money may be drawn, and for what purposes paid.