N.J. Stat. § 52:27BB-57
The board may require that obligations, bonded or otherwise, shall not be issued or authorized by the municipality, including school districts or any special districts except as expressly authorized by the director.
The board may require that the municipality and its special districts shall not borrow any moneys, make any purchase, enter into any arrangements or contracts requiring the expenditure of any revenues or engaging the credit of the municipality in any way or undertake any financial liabilities or indebtedness whatsoever unless expressly authorized by the director. The board shall limit those purchases and contracts requiring authorization of the director to those exceeding $4,500.00, unless the board shall find good and sufficient cause for requiring otherwise. In any case, the board shall inform the municipal governing body, by resolution, of the types and amounts of the purchases and contracts which shall require authorization.
N.J.S. § 52:27BB-57