[POMPONIUS libro uicensimo quarto ad Quintum Mucium. ] §41.3.24.prUbi lex inhibet usucapionem, bona fides possidenti nihil prodest.
[POMPONIUS, On Quintus Mucius, book 24] Where the law prohibits usucapion, good faith is of no avail to the possessor.
§41.3.24.1Interdum etiamsi non fuerit inchoata usucapio a defuncto, procedit heredi eius: ueluti si uitium, quod obstabat non ex persona, sed ex re, purgatum fuerit, ut puta si fisci res esse desierit aut furtiua aut ui possessa.
Sometimes, even if usucapion was not begun by the deceased, it proceeds for his heir: as for instance, if the defect which stood in the way, not of a personal but of a real nature, has been purged; as when a thing has ceased to belong to the treasury, or to be a stolen thing, or one possessed by force.