Every guardian must manage the estate of his ward frugally and without waste, and apply the income and profits thereof, as far as may be necessary, for the comfortable and suitable maintenance and support of the ward, and his family, if there be any; and if such income and profits be insufficient for that purpose, the guardian may sell the real estate, upon obtaining an order of the district court therefor, as provided, and must apply the proceeds of such sale, as far as may be necessary, for the maintenance and support of the ward and his family, if there be any.
Okla. Stat. tit. 30, § 4-705