[ULPIANUS libro uicesimo sexto ad edictum. ] §50.17.41.prNon debet actori licere, quod reo non permittitur.
[ULPIANUS, in his twenty-sixth book on the Edict.] What is not permitted to the defendant ought not to be allowed to the plaintiff.
§50.17.41.1In re obscura melius est fauere repetitioni quam aduenticio lucro.
In an obscure matter, it is better to favor recovery than adventitious gain.