Agent and patient

AGENT AND PATIENT. This phrase is used to indicate the state of a person who is required to do a thing, and is at the same time the person to whom it is done; as, when a man is indebted to another, and he appoints him his executor, the latter is required to pay the debt in his capacity of executor, and entitled to receive it in his own right, he is then agent and patient. Termes de la ley.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.