[MODESTINUS libro primo regularum. ] §48.5.35.prStuprum committit, qui liberam mulierem consuetudinis causa, non matrimonii continet, excepta uidelicet concubina.
[MODESTINUS, Rules, Book I.] He commits stuprum who keeps a free woman for the sake of habitual intercourse and not for marriage, with the exception, of course, of a concubine.
§48.5.35.1Adulterium in nupta admittitur: stuprum in uidua uel uirgine uel puero committitur.
Adultery is committed with a married woman; stuprum is committed against a widow, a virgin, or a boy.