Okla. Stat. tit. 84, § 84-144: Witness entitled without will

If a witness to whom any beneficial devise, legacy or gift, void

by the preceding section, is made, would have been entitled to any

share of the estate of the testator, in case the will should not be

established, he succeeds to so much of the share as would be

distributed to him, not exceeding the devise or bequest made to him

in the will, and he may recover the same of the other devisees or

legatees name in the will, in proportion to and out of the parts

devised or bequeathed to them. R.L. 1910, Sec. 8378.