Okla. Stat. tit. 18, § 572

The trustees or directors of any such corporation shall faithfully apply all the funds collected, or the proceeds of the property belonging to the institution, according to their best judgment, in erecting, completing or repairing suitable buildings, in supporting necessary officers, instructors, agents and employees, and in procuring books, maps, charts, globes and philosophical, chemical and other apparatus or cabinets, necessary to the objects and success of the institution; and all donations, devises or bequests made to it for particular purposes when accepted, shall be applied in conformity with the express condition of the donor or devisor.