Okla. Stat. tit. 15, § 15-24: Judicial determination of incapacity, contracts after -

Wills after restoration.

After his incapacity has been judicially determined, a person of

unsound mind can make no conveyance or other contract, nor designate

any power, nor waive any right, until his restoration to capacity is

judicially determined. But if actually restored to capacity, he may

make a will, though his restoration is not thus determined.