Mississippi Code Title 27. Taxation and Finance § 27-61-7

(a) By the purchase of a sufficient amount or quantity of fuel from a wholesale or retail dealer or distributor to operate such motor vehicle in this state; provided, however, that at the time of the purchase of such fuel, the owner or operator of such motor vehicle shall obtain, from the dealer or distributor from whom purchased, an invoice or sales ticket on forms approved by the commission, which shall contain such information as the commission shall deem reasonably necessary for the administration of this chapter. Said invoices shall remain in the motor vehicle for the remainder of the trip over the highways of this state, and thereafter shall be preserved and retained by the owner or operator for a period of not less than three (3) years, and shall be produced for the inspection and examination of the commission at any reasonable time and place, either within or without this state, upon proper demand therefor.

(b) By having a valid credential issued by any member jurisdiction of the International Fuel Tax Agreement and by complying fully with the International Fuel Tax Agreement.