[ULPIANUS libro uicensimo septimo ad edictum. ] §13.5.16.prSi duo quasi duo rei constituerimus, uel cum altero agi poterit in solidum.
[ULPIANUS, from the twenty-seventh book on the Edict.] If two of us make a promise as if we were two codebtors, an action can be brought against either for the whole amount.
§13.5.16.1Sed et certo loco et tempore constituere quis potest, nec solum eo loci posse eum petere, ubi ei constitutum est, sed exemplo arbitrariae actionis ubique potest.
But a person can also make a promise for a specific place and time, and he can sue not only in the place where the promise was made to him, but anywhere, following the example of the action on an award.
§13.5.16.2Ait praetor: "si appareat eum qui constituit neque soluere neque fecisse neque per actorem stetit, quo minus fieret quod constitutum est. " §13.5.16.3Ergo si non stetit per actorem, tenet actio, etiamsi per rerum naturam stetit: sed magis dicendum est subueniri reo debere.
The praetor says: "If it should appear that the person who made the promise has neither paid nor performed, and that it was not due to the plaintiff that what was promised was not performed." Therefore, if it was not due to the plaintiff, the action lies, even if it was due to the nature of things; but it should rather be said that the defendant ought to be relieved.
§13.5.16.4Haec autem uerba praetoris "neque fecisse reum quod constituit" utrum ad tempus constituti pertinent an uero usque ad litis contestationem trahimus, dubitari potest: et puto ad tempus constituti.
However, it can be doubted whether these words of the praetor "and that the defendant has not performed what he promised" refer to the time of the promise, or whether we should extend them up to the joinder of issue; and I think they refer to the time of the promise.