[PAULUS libro tertio quaestionum. ] §46.1.54.prSi in pignore contrahendo deceptus sit creditor, qui fideiussorem pro mutuo accepit, agit contraria pigneraticia actione, in quam actionem ueniet quod interest creditoris.
[Paulus, in the third book of Questions.] If a creditor, who has accepted a surety for a loan, is deceived in contracting a pledge, he may bring the contrary action of pledge, into which action the interest of the creditor will come.
sed ea actio fideiussorem onerare non poterit: non enim pro pignore, sed pro pecunia mutua fidem suam obligat.
But that action cannot place a burden upon the surety; for he binds his credit not for the pledge, but for the loaned money.