[PAULUS libro secundo ad Uitellium. ] §36.2.21.prSi dies adposita legato non est, praesens debetur aut confestim ad eum pertinet cui datum est: adiecta quamuis longa sit, si certa est, ueluti Kalendis Ianuariis centesimis, dies quidem legati statim cedit, sed ante diem peti non potest: at si incerta, quasi 'cum pubes erit' 'cum in familiam nupserit' 'cum 'magistratum inierit' cum aliquid demum, quod scribenti comprehendere sit commodum, fecerit: nisi tempus condicioue optigit, neque res pertinere neque dies legati cedere potest.
[PAULUS, second book on Vitellius.] If a time (dies) is not attached to a legacy, it is owed immediately, or belongs immediately to the person to whom it was given; if one is attached, however distant it may be, if it is certain, such as "on the hundredth Kalends of January," the time of the legacy indeed is established (cedit) immediately, but it cannot be claimed before the day. But if it is uncertain, such as "when he reaches puberty," "when she marries into a family," "when he enters upon a magistracy," or when he has finally done something which it is convenient for the writer to specify; unless the time or condition has occurred, neither can the thing belong to him nor can the time of the legacy establish (cedit).
§36.2.21.1Si sub condicione, qua te heredem institui, sub ea condicione Titio legatum sit, Pomponius putat perinde huius legati diem cedere atque si pure relictum esset, quoniam certum esset herede existente debitum iri: neque enim per condicionem heredum fieri incerta legata nec multum interesse tale legatum ab hoc 'si heres erit, dato'.
If a legacy is given to Titius under the same condition under which I instituted you as heir, Pomponius thinks that the time of this legacy establishes just as if it had been left unconditionally (pure), since it would be certain that it will be owed once there is an heir; for legacies do not become uncertain through a condition attached to the heirs, nor is there much difference between such a legacy and this one: "if he is the heir, let him give."