[ULPIANUS libro secundo disputationum. ] §14.5.6.prEum, qui se patrem familias simulauit et mandante aliquo stipulatus est, mandati teneri Marcellus scribsit, quamuis rem praestare non possit: et sane uerum est teneri eum debere, quia dolo fecit.
[ULPIANUS, Disputations, Book 2] Marcellus wrote that a person who pretended to be a paterfamilias and entered into a stipulation on the mandate of someone, is held liable on the mandate, even though he cannot perform the obligation; and indeed it is true that he ought to be held liable, because he acted with malice.
hoc et in omnibus bonae fidei iudiciis dicendum erit.
This will also have to be said in all bonae fidei iudicia.