[PAULUS libro duodecimo ad Sabinum. ] §22.1.20.prUsuras illicitae sorti mixtas ipsas tantum non deberi constat, ceterum sortem non uitiare.
[PAULUS, from his twelfth book on Sabinus.] It is well established that only the interest itself, which is mixed with an unlawful principal, is not due, but otherwise it does not vitiate the principal.