[PAULUS libro quinto ad Plautium. ] §17.1.45.prSi mandatu meo fundum emeris, utrum cum dederis pretium ageres mecum mandati an et antequam des, ne necesse habeas res tuas uendere? et recte dicitur in hoc esse mandati actionem, ut suscipiam obligationem, quae aduersus te uenditori competit: nam et ego tecum agere possum, ut praestes mihi aduersus uenditorem empti actiones.
[PAULUS, On Plautius, Book V.] If you have bought a tract of land by my mandate, should you bring an action of mandate against me when you have paid the price, or even before you pay, so that you do not have to sell your own property? And it is rightly said that an action of mandate lies in this case, so that I may undertake the obligation which the seller has against you; for I also can bring an action against you, so that you may make over to me the actions of purchase against the seller.
§17.1.45.1Sed si mandatu meo iudicium suscepisti, manente iudicio sine iusta causa non debes mecum agere, ut transferatur iudicium in me: nondum enim perfecisti mandatum.
But if you have undertaken a lawsuit by my mandate, you ought not, while the lawsuit is pending, to bring an action against me without just cause so that the lawsuit may be transferred to me; for you have not yet completed the mandate.
§17.1.45.2Item si, dum negotia mea geris, alicui de creditoribus meis promiseris, et antequam soluas dicendum est te agere posse, ut obligationem suscipiam: aut si nolit creditor obligationem mutare, cauere tibi debeo defensurum te.
Likewise, if, while managing my affairs, you have made a promise to one of my creditors, even before you pay, it must be said that you can bring an action so that I may undertake the obligation; or, if the creditor is unwilling to change the obligation, I ought to give security that I will defend you.
§17.1.45.3Si iudicio te sisti promisero nec exhibuero, et antequam praestem, mandati agere possum, ut me liberes: uel si pro te reus promittendi factus sim.
If I have promised that you would appear in court and have not produced you, even before I pay, I can bring an action of mandate so that you may release me; or if I have become a debtor by promising on your behalf.
§17.1.45.4Sed si mandauero tibi, ut creditori meo soluas, tuque expromiseris et ex ea causa damnatus sis, humanius est et in hoc casu mandati actionem tibi competere.
But if I have mandated you to pay my creditor, and you have promised to pay him and have been condemned on that account, it is more humane that in this case too an action of mandate is available to you.
Quotiens autem ante solutam §17.1.45.5pecuniam mandati agi posse diximus, faciendi causa, non dandi tenebitur reus: et est aequum, sicut mandante aliquo actionem nacti cogimur eam praestare iudicio mandati, ita ex eadem causa obligatos habere mandati actionem, ut liberemur.
However, as often as we have said that an action of mandate can be brought before the money is paid, the defendant will be bound for doing something, not for giving; and it is equitable, just as when we acquire an action by someone's mandate we are compelled to make it over by the action of mandate, so those who are obligated from the same cause should have an action of mandate so that we may be released.
§17.1.45.6Si fideiussor multiplicauerit summam, in quam fideiussit, sumptibus ex iusta ratione factis, totam eam praestabit is pro quo fideiussit.
If a guarantor has increased the sum for which he became guarantor by expenses incurred for a just reason, the person for whom he became guarantor shall pay the whole of it.
§17.1.45.7Quod mihi debebas a debitore tuo stipulatus sum periculo tuo: posse me agere tecum mandati in id, quod minus ab illo seruare potero, Nerua Atilicinus aiunt, quamuis id mandatum ad tuam rem pertineat, et merito: tunc enim liberatur is qui debitorem delegat, si nomen eius creditor secutus est, non cum periculo debitoris ab eo stipulatur.
What you owed me I have stipulated from your debtor at your risk; Nerva and Atilicinus say that I can bring an action of mandate against you for that which I shall be able to recover less from him, although that mandate pertains to your interest; and rightly so: for he who delegates a debtor is released only if the creditor has accepted his credit, not when he stipulates from him with the risk of the debtor.
§17.1.45.8Idem iuris est, si mandatu fideiussoris cum reo egissem, quia sequenti mandato liberaretur ex priore causa.
The same rule of law applies if, by the mandate of the guarantor, I had sued the principal debtor, because he would be released from the prior cause by the subsequent mandate.