[ULPIANUS libro quarto regularum. ] §41.2.42.prCommunis seruus etiamsi ab uno ex dominis omnium nomine possideatur, ab omnibus possideri intellegitur.
[ULPIANUS, in the fourth book of Rules.] A common slave, even if he is possessed by one of the masters in the name of all, is understood to be possessed by all.
§41.2.42.1Procurator si quidem mandante domino rem emerit, protinus illi adquirit possessionem: quod si sua sponte emerit, non nisi ratam habuerit dominus emptionem.
If an agent buys a thing on the mandate of his principal, he immediately acquires possession for him; but if he buys it of his own accord, he does not do so unless the principal ratifies the purchase.