[GAIUS libro trigensimo ad edictum prouinciale. ] §44.4.6.prSi opera creditoris acciderit, ut debitor pecuniam, quam soluturus erat, perderet, exceptione doli mali creditor remouebitur.
[GAIUS in the thirtieth book on the provincial edict.] If it should happen through the agency of the creditor that the debtor loses the money which he was about to pay, the creditor will be barred by the exception of dolus malus.
idem est et si creditori eius numeratam pecuniam ratam creditor non habeat.
The same applies if the creditor does not ratify the money paid to his creditor.