N.J. Stat. Ann. § 40A:11-13.1

20. Goods or services, the payment for which utilizes only funds received by a contracting unit from a bequest, legacy or gift, shall be subject to the provisions of P.L.1971, c.198 (C.40A:11-1 et seq.), except that if such bequest, legacy or gift contains written instructions as to the specifications, manufacturer or vendor, or source of supply of the goods or services to be provided or performed, such instructions shall be honored, provided that the bequest, legacy or gift is used in a manner consistent with N.J.S.40A:5-29.