N.J. Stat. § 40A:4-25.1
Monies approved by the State Librarian for transfer to a municipality by the board of trustees of its municipal free library, pursuant to subsection c. of R.S. 40:54-15, may be anticipated by the municipality as a miscellaneous revenue; provided, however, that the monies shall be used solely and exclusively by the municipality for the purposes of reducing the amount the municipality is required to raise by local property tax levy for municipal purposes. The director shall certify that each municipality has complied with this section. If the director finds that monies transferred to a municipality by its municipal free library pursuant to subsection d. of R.S. 40:54-15 are not used by that municipality solely and exclusively to reduce the amount required to be raised by the local property tax levy, then the director shall correct the municipal budget, pursuant to N.J.S. 40A:4-86, to ensure that the transferred funds are used for that purpose only.
N.J.S. § 40A:4-25.1