Okla. Stat. tit. 84, § 84-223: Advancements

Any estate, real or personal, given by the decedent in his

lifetime, as an advancement to any child or other lineal descendant,

is a part of the estate of the decedent for the purposes of division

and distribution thereof among his issue, and must be taken by such

child, or other lineal descendant, toward his share of the estate of

the decedent. R.L. 1910, Sec. 8428.