N.D. Cent. Code § 47-19-33

An individual authorized by law to take or receive the proof or acknowledgment of the execution of an instrument or affidavit and to certify to the same may not take or receive the proof, acknowledgment, or affidavit or certify to the same if that individual is a party to the instrument or a member of any partnership that is a party to the instrument, or if the husband or wife of that individual is a party to the instrument. An acknowledgment taken or received in violation of this section is invalid.