[IDEM libro trigensimo sexto digestorum. ] §36.2.17.prCum legato seruo aliquid legatur, dies eius legati quod seruo datur non mortis tempore, sed aditae hereditatis cedit: et ideo impedimento non est regula iuris, quo minus manumisso legatum debeatur, quia etsi confestim pater familias moreretur, non in eiusdem personam et emolumentum legati et obligatio iuris concurreret.
[THE SAME, thirty-sixth book of the Digest.] When something is bequeathed to a slave who has been bequeathed, the right to that legacy which is given to the slave vests not at the time of death, but when the inheritance is entered upon: and therefore the rule of law is no impediment to the legacy being owed to him after he has been manumitted, because even if the paterfamilias were to die immediately, both the benefit of the legacy and the legal obligation would not concur in the person of the same individual.
perinde igitur est hoc, de quo quaeritur, ac si filio herede instituto patri legatum esset: quod consistere intellegitur eo, quod, quamuis statim pater familias moriatur, potest emancipatus adire hereditatem, ut patri legatum debeat
Therefore, this case in question is just as if a legacy had been left to a father, his son having been instituted heir: which is understood to stand valid for this reason, that, although the paterfamilias should die immediately, the son, having been emancipated, can enter upon the inheritance, so that he owes the legacy to his father.