Okla. Stat. tit. 12 § 1147.4
Where a sale is made under the provisions of this act, the court may appoint a trustee to make such sale on such terms as it may deem advisable, at public or private sale, with or without notice, and on such terms as to the payment of the purchase price as the court may direct and in the event the sale is made partly in cash and partly on credit, the unpaid balance of the purchase money shall be evidenced by a first mortgage secured by the real estate sold. The trustee appointed to sell said real estate shall make a verified return of sale and, upon confirmation by the court, shall execute a trustee's deed conveying the fee simple title to the real estate sold. Said deed shall vest in the purchaser the full fee simple title to said real estate and the rights and claims of all persons who held an interest therein prior to the sale, including all those of a class not then in being, shall be forever barred. The court shall not confirm said sale unless it shall have received satisfactory evidence that the sale was fairly conducted and that a higher price cannot be obtained and furthermore that the sale is for the best interest of all parties who have or may claim an interest therein.
Okla. Stat. tit. 12, § 1147.4