Ad legem Iuliam et Papiam libri
Ex libro XV
Terentius Clemens, On the Lex Julia et Papia, Book V. Where property has been bequeathed to me absolutely, and has also been left to my slave either absolutely or conditionally, and I reject the legacy, and then, the condition having been fulfilled, I wish to obtain what was bequeathed to my slave, it has been established that the bequest of half the legacy is void, unless someone should claim that the condition was that the slave should be living, for then the legacy which I once desired to obtain will be entirely mine; which seems to be the more equitable opinion. This rule also applies where the same property is bequeathed to two of my slaves.
Terentius Clemens, On the Lex Julia et Papia, Book XV. It is established that where the choice of certain articles is bequeathed, it cannot be made before the estate is entered upon, and if it should be made, it will be void.