[PAULUS libro tertio quaestionum. ] §50.17.84.prCum amplius solutum est quam debebatur, cuius pars non inuenitur quae repeti possit, totum esse indebitum intellegitur manente pristina obligatione.
[PAULUS, from his third book of Questions.] When more has been paid than was due, and no part of it can be identified which can be recovered, the whole is understood to be not due, while the original obligation remains.
§50.17.84.1Is natura debet, quem iure gentium dare oportet, cuius fidem secuti sumus.
He owes by natural law who is obliged to give under the law of nations, and whose credit we have trusted.