Miss. Code Ann. § 31-17-161

Outstanding notes evidencing such temporary borrowings shall be funded and retired by the issuance and sale of state-supported debt, from time to time, as determined by the commission and must be sold and issued not later than a date four (4) years after the date of issuance of the first notes evidencing such temporary borrowings to the extent that payment of such notes has not otherwise been made or provided for by sources other than proceeds of replacement notes.