A condition in a contract, the fulfillment of which is impossible or unlawful within the meaning of chapter 9-04 or which is repugnant to the nature of the interest created by the contract, is void.
N.D. Cent. Code § 9-01-14
Conditions unlawful or impossible
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.