Okla. Stat. tit. 58, § 58-91: Nuncupative wills, how proved

Nuncupative wills may, at any time within six (6) months after

the testamentary words are spoken by the decedent, be admitted to

probate on petition and notice as provided for the probate of wills

executed in writing. The petition, in addition to the

jurisdictional facts, must allege that the testamentary words, or

the substance thereof, were reduced to writing within thirty (30)

days after they were spoken, which writing must accompany the

petition.