[MODESTINUS libro primo differentiarum. ] §28.6.3.prCum filio impuberi pater ita substituerit: 'quisquis mihi heres erit, idem filio impuberi heres esto', placuit ad hanc substitutionem scriptos tantummodo ad hereditatem admitti: itaque dominus, cui per seruum hereditatis portio quaesita sit, ex substitutione impuberi heres effici non poterit, si seruus ab eius exierit potestate.
[MODESTINUS in the first book of Differences.] When a father has substituted for his child under puberty as follows: 'Whoever will be my heir, let the same be heir to my child under puberty', it has been held that only those written (as heirs) are admitted to this substitution; and therefore a master, for whom a share of the inheritance has been acquired through his slave, cannot be made heir to the child under puberty from the substitution, if the slave has departed from his power.