[IDEM libro undecimo responsorum. ] §2.14.41.pr'Intra illum diem debiti partem mihi si solueris, acceptum tibi residuum feram et te liberabo. ' licet actionem non habet, pacti tamen exceptionem competere debitori constitit.
[THE SAME, Opinions, book 11] 'If you pay me part of the debt within that day, I will enter the remainder to your credit and free you.' Although this does not give rise to an action, it is established that the defense of agreement is available to the debtor.