N.J. Stat. § 40:14-13: Borrowing money appropriated; expenditure

When such appropriations shall be made and the money voted, the boards of chosen freeholders and the governing bodies of the municipalities appropriating the same may borrow the money so appropriated upon the obligations of their respective counties or municipalities and pay the same to the county treasurer to be expended under the direction of the board of chosen freeholders of the county for the purposes for which it was voted.