[ULPIANUS libro uicensimo sexto ad edictum. ] §12.2.18.pralias autem procuratorem deferentem iusiurandum non esse audiendum Iulianus libro decimo digestorum scribit, ne postea reus, qui semel iurauit, a domino conueniatur: nec multum ei proficere, si fuerit ei de rato cautum: siue enim dominus petat, cogetur docere reus liquido se iurasse posita scilicet exceptione, siue ex stipulatione de rato agat, necesse habebit ipse de periurio suo docere.
[ULPIANUS, Book XXVI on the Edict.] Julian writes in the tenth book of his Digests that in other cases a procurator tendering an oath should not be heard, lest the defendant, who has once taken the oath, be afterwards sued by the principal; and that it is of no great benefit to him, even if security has been given to him for ratification. For whether the principal sues, the defendant will be compelled to show that he clearly took the oath, having of course pleaded the exception, or if he brings an action under the stipulation for ratification, he himself will have to show his own perjury.