[IDEM libro secundo quaestionum. ] §39.6.23.prSi filio familias mortis causa donatum sit et uiuo donatore moriatur filius, pater uiuat, quaesitum est, quid iuris sit.
[THE SAME, from the second book of Questions.] If a donation mortis causa was made to a filius familias, and the son dies while the donor is still living, and the father survives, the question has been raised as to what the law is.
respondit morte filii condictionem competere, si modo ipsi potius filio quam patri donaturus dederit: alioquin, si quasi ministerio eius pater usus sit, ipsius patris mortem spectandam esse.
He answered that on the death of the son a condictio is competent, provided that the donor gave intending to benefit the son himself rather than the father; otherwise, if the father made use, as it were, of his agency, the death of the father himself must be considered.
idque iuris fore et si de persona serui quaeratur.
And the same law would apply even if the question arose concerning the person of a slave.