Miss. Code § 71-1-43
The income or principal payable to a beneficiary or beneficiaries under any trust created by an employer as part of a pension plan, disability or death benefit plan, profit-sharing plan, or under any trust created under a retirement plan for which provision has been made under the laws of the United States of America exempting such trust from federal income tax shall not be pledged, assigned, transferred, sold, or in any manner whatsoever accelerated, anticipated, or encumbered by the beneficiary or beneficiaries. Nor shall any income or principal be in any manner subject or liable in the hands of the trustee for the debts, contracts, or engagements of the beneficiary or beneficiaries, or be subject to any assignment or other involuntary alienation or disposition whatsoever. Nor shall any income or principal be subject to the levy of any execution, writ of attachment, or garnishment thereon.
Miss. Code § 71-1-43