There shall be a provision that a copy of the application, if any, of the policyholder shall be attached to the policy when issued; that all statements made by the policyholder or by the individuals insured shall in the absence of fraud be deemed representations and not warranties, and that no statement made by any individual insured shall be used in any contest unless a copy of the instrument containing the statement is or has been furnished to such individual or to his beneficiary, if any.