[GAIUS libro primo ad edictum prouinciale. ] §2.2.4.prIllud eleganter praetor excipit: 'praeterquam si quis eorum contra eum fecerit, qui ipse eorum quid fecisset': et recte, ne scilicet uel magistratus, dum studet hoc edictum defendere, uel litigator, dum uult beneficio huius edicti uti, ipse in poenam ipsius edicti committat.
[GAIUS, on the Provincial Edict, Book I.] The praetor elegantly makes the following exception: 'except where any of them has acted against a person who himself had done any of those things'; and rightly so, namely, lest either the magistrate, while he is eager to uphold this edict, or the litigant, while he wishes to enjoy the benefit of this edict, should himself incur the penalty of the same edict.