A testamentary disposition, when vested, cannot be divested unless upon the occurrence of the precise contingency prescribed by the testator for that purpose.
Okla. Stat. tit. 84, § 176
Rights divested, when
R.L. 1910, Sec. 8406
Official source: Oklahoma Legislature. Reproduced from public-domain Oklahoma statutes; confirm against the official source for the current text. Not legal advice.