[POMPONIUS libro septimo decimo epistularum. ] §21.1.64.prLabeo scribit, si uno pretio plures seruos emisti et de uno agere uelis, interaestimationem seruorum proinde fieri debere, atque ut fieret in aestimationem bonitatis agri, cum ob euictam partem fundi agatur.
[POMPONIUS in the seventeenth book of Epistles.] Labeo writes that, if you have bought several slaves for a single price and wish to bring an action concerning one of them, an apportionment of the valuation of the slaves must be made in the same way as would be done in the valuation of the quality of land when an action is brought on account of the eviction of a part of the estate.
§21.1.64.1Idem ait, si uno pretio plures seruos uendidisti sanosque esse promisisti et pars dumtaxat eorum minus sana sit, de omnibus 'aduersus dictum promissum' recte agi. §21.1.64.2Ibidem ait errare et fugere iumentum posse, nec tamen erronem aut fugitiuum esse agi posse.
The same writer says that, if you have sold several slaves for a single price and promised that they are healthy, and only some of them are less than healthy, an action may rightly be brought concerning all of them "against what was declared or promised." In the same place he says that a beast of burden can wander and run away, but yet it cannot be sued on the ground that it is a wanderer or a runaway.