The insurance principle which imposes a duty on the parties of a contract 'not to misrepresent any matter relating to the insurance' is known as

The principle that imposes a duty on the parties of an insurance contract to refrain from misrepresenting any matter relating to the insurance is known as utmost good faith. This principle, originating from the Latin term "uberrima fides," signifies that both the insurer and the insured must act honestly and provide all relevant information that might affect the policy.

In the context of an insurance contract, utmost good faith ensures that the insurer has all necessary details to assess the risk accurately and quote a fair premium. If either party fails to uphold this duty and provides false or misleading information, it can lead to the voiding of the policy or a refusal of claims. This requirement is fundamental in establishing trust in the contractual relationship between the insurer and the insured.

The other concepts mentioned are related to different aspects of insurance. Assignment refers to the transfer of rights or benefits under an insurance policy; insurable interest is a requirement that an insured must have a stake in the subject matter of the insurance; and legal personality pertains to the recognition of an entity as having rights and responsibilities, which does not directly relate to the duty of disclosure.