Every express warranty made at or before the execution of an insurance policy must be contained in the policy or in another instrument signed by the insured and referred to in the policy as a part of the policy.
N.D. Cent. Code § 26.1-30-11
Express warranty must be written as part of policy
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.