N.Y. Const. art. VII, § 6

Except for appropriations contained in the bills submitted by the governor and in a supplemental appropriation bill for the support of government, no appropriations shall be made except by separate bills each for a single object or purpose. All such bills and such supplemental appropriation bill shall be subject to the governor's approval as provided in section 7 of article IV. No provision shall be embraced in any appropriation bill submitted by the governor or in such supplemental appropriation bill unless it relates specifically to some particular appropriation in the bill, and any such provision shall be limited in its operation to such appropriation.