New York Judiciary Law Section 13-B - Oath of referee, receiver, commissioner or appraiser.

  13-b.  Oath  of  referee,  receiver,  commissioner  or appraiser. A
  referee, receiver, commissioner or appraiser appointed  by  a  court  or
  judge,  before  entering  upon his duties, shall be sworn faithfully and
  fairly to discharge the trust committed to him. The oath may  be  waived
  upon consent of all parties.

Last modified: February 3, 2019