D.C. Code § 19-1704.06
§ 19-1704.06. Power to contract: power of appointment not presently exercisable.
(a) A powerholder of a power of appointment that is not presently exercisable may contract to exercise or not to exercise the power only if the powerholder:
(1) Is also the donor of the power; and
(2) Has reserved the power in a revocable trust.