Where specific legacies are for life only, the first legatees must sign and deliver to the second legatee, or, if there is none, to the personal representative, an inventory of the property, expressing that the same is in his custody for life only, and that, on his decease, it is to be delivered and to remain to the use and for the benefit of the second legatee, or to the personal representative as the case may be. R.L.1910, § 8325.
Oklahoma Legal Code