[ULPIANUS libro septuagensimo septimo ad edictum. ] §2.11.9.prSi seruus iudicio se sisti promittat, non committitur stipulatio neque in eum neque in fideiussores eius.
[ULPIAN, on the Edict, book 77] If a slave promises that he will appear in court, the stipulation is not incurred either against him or against his sureties.
§2.11.9.1Si plurium seruorum nomine iudicio sistendi causa una stipulatione promittatur, poenam quidem integram committi, licet unus status non sit, Labeo ait, quia uerum sit omnes statos non esse: uerum si pro rata unius offeratur poena, exceptione doli usurum eum, qui ex hac stipulatione conuenitur.
If, in the name of several slaves, a promise is made by a single stipulation for the purpose of their appearing in court, Labeo says that the penalty indeed is incurred in its entirety, even if only one has failed to appear, because it is true that all have not appeared; but if the penalty is offered pro rata for one, the person who is sued under this stipulation will use the plea of fraud.