N.D. Cent. Code § 9-05-01: Good consideration defined

Any benefit conferred or agreed to be conferred upon the promisor by any other person to which the promisor is not entitled lawfully, or any prejudice suffered or agreed to be suffered by such person, other than such as that person, at the time of consent, is lawfully bound to suffer as an inducement to the promisor, is a good consideration for a promise.