[AFRICANUS libro tertio quaestionum. ] §13.4.8.prCentum Capuae dari stipulatus fideiussorem accepisti: ea pecunia ab eo similiter ut ab ipso promissore peti debebit, id est ut, si alibi quam Capuae petantur, arbitraria agi debeat lisque tanti aestimetur, quanti eius uel actoris interfuerit eam summam Capuae potius quam alibi solui.
[AFRICANUS from the third book of Questions.] If you have stipulated for one hundred to be given at Capua and have accepted a surety: that money must be claimed from him in the same way as from the promisor himself, that is, if it is claimed elsewhere than at Capua, an arbitrary action must be brought, and the suit must be valued at as much as it was of interest to him or to the plaintiff that that sum be paid at Capua rather than elsewhere.
nec oportebit, quod forte per reum steterit, quo minus tota centum Capuae soluerentur, obligationem fideiussoris augeri: neque enim haec causa recte comparabitur obligationi usurarum: ibi enim duae stipulationes sunt, hic autem una pecuniae creditae est, circa cuius exsecutionem aestimationis ratio arbitrio iudicis committitur.
Nor will it be proper that the obligation of the surety be increased because it was perhaps due to the debtor that the entire one hundred was not paid at Capua; for this case will not rightly be compared to the obligation for interest: for there, there are two stipulations, but here there is only one for the money lent, concerning the execution of which the method of valuation is committed to the discretion of the judge.
eiusque differentiae manifestissimum argumentum esse puto, quod, si post moram factam pars pecuniae soluta sit et reliquum petatur, officium iudicis tale esse debeat, ut aestimet, quanti actoris intersit eam dumtaxat summam quae petetur Capuae solutam esse.
And I think the clearest proof of this difference is that, if after default has been made a part of the money has been paid and the remainder is claimed, the duty of the judge ought to be such that he values how much it is of interest to the plaintiff that only that sum which is being claimed was paid at Capua.