Notae ad Iuliani Digestorum libros
Ex libro XVII
Julianus, Digest, Book XVII. If I give property belonging to another as a donation mortis causa, and it should afterwards be acquired by usucaption, the true owner cannot recover it, but I can do so, if I regain my health. 1Marcellus says that questions of fact may arise with reference to donations mortis causa, for the donation may be made in such a way that if the donor should die of his illness, it shall not be returned; or that it shall be returned if the donor, having changed his mind, desires it to be restored to him, even if he should die of the same illness. A donation of this kind can also be made subject to the provision that it shall not be returned unless the person who is to receive it dies first. A donation mortis causa can be made in such a way that the property shall not be returned in any event; that is to say, not even if the donor should recover his health.