[SCAEUOLA libro tertio decimo quaestionum. ] §45.3.19.prSi alienus seruus duobus bonae fidei seruiens ex unius eorum re adquirat, ratio facit, ut ei ex cuius re adquisiit id totum ei adquirat, siue ei soli siue quasi duobus seruiat: nam et in ueris dominis quotiens utrique adquiritur, totiens partes adquiri: ceterum si alii non adquiratur, alium solidum habiturum.
[SCAEUOLA, from the thirteenth book of Questions.] If a slave belonging to another, serving two persons in good faith, should acquire from the property of one of them, reason dictates that he acquires the whole of it for him from whose property he acquired, whether he serves him alone or as if serving two. For also in the case of true owners, as often as acquisition is made for both, so often are shares acquired; but if it is not acquired for one, the other will have the whole.
igitur eadem ratio erit et in proposito, ut hic seruus alienus, qui mihi et tibi bona fide seruit, mihi solidum ex re mea adquirat, quia tibi non potest adquiri, quia non sit ex re tua.
Therefore, the same rule will apply also in the proposed case, so that this slave belonging to another, who serves you and me in good faith, acquires the whole for me from my property, because it cannot be acquired for you, since it is not from your property.