[IAUOLENUS libro nono ex Cassio. ] §17.1.51.prFideiussor quamuis per errorem ante diem pecuniam soluerit, repetere tamen ab eo non potest ac ne mandati quidem actionem, antequam dies soluendi ueniat, cum reo habebit.
[IAUOLENUS from the ninth book on Cassius] A surety, even if he paid the money before the due date by mistake, cannot recover it from him, nor indeed will he have the action on mandate against the principal debtor before the day for payment arrives.