[IDEM libro tertio decimo digestorum. ] §12.2.40.prIusiurandum a debitore exactum efficit, ut pignus liberetur: est enim hoc acceptilationi simile: perpetuam certe exceptionem parit.
[THE SAME, Book 13 of the Digests.] An oath exacted from a debtor has the effect of releasing the pledge; for this is similar to a formal release; it certainly produces a perpetual exception.
idcirco poenam quoque petentem creditorem exceptione summoueri oportet et solutum repeti potest, utpote cum interposito eo ab omni controuersia discedatur.
Therefore, even a creditor who sues for a penalty must be barred by an exception, and what has been paid can be recovered, inasmuch as, once the oath has been taken, all controversy is departed from.