New York Consolidated Laws, Real Property Actions and Proceedings Law - RPA § 1355. Report of sale;  confirmation

1. Within thirty days after completing the sale and executing the proper conveyance to the purchaser, unless such time be extended by the court within said thirty days, the officer making the sale shall file with the clerk his report under oath of the disposition of the proceeds of the sale, accompanied by the vouchers of the persons to whom payments were made.

2. A motion to confirm such report of sale shall not be made within three months after the filing of the report and shall in any event be made not later than four months after the filing of such report, except that if there be no surplus moneys arising from the sale of the mortgaged premises under such judgment, an application for confirmation of the report of sale may be made at any time after the report shall have been filed eight days.  Where the report of sale shows surplus money the party moving for confirmation of the report of sale shall present with his motion papers a proper voucher for the surplus moneys showing that they have been paid into court, a certificate of the clerk specifying the notices of claim to the surplus moneys, if any, so filed with him, and an affidavit showing any other unsatisfied lien on the property.