N.Y. Judiciary Law § 19: Judge must not be interested in costs

§ 19. Judge must not be interested in costs. A judge shall not,

directly or indirectly, be interested in the costs of an action, claim,

matter, motion or proceeding, brought before him, or in a court of which

he is, or is entitled to act as a member, except an action, claim,

matter, motion or proceeding to which he is a party, or in which he is

interested.