[POMPONIUS libro decimo epistularum. ] §19.1.55.prSi seruus, qui emeretur uel promitteretur, in hostium potestate sit, Octauenus magis putabat ualere emptionem et stipulationem, quia inter ementem et uendentem esset commercium: potius enim difficultatem in praestando eo inesse, quam in natura, etiamsi officio iudicis sustinenda esset eius praestatio, donec praestari possit.
[POMPONIUS in the tenth book of his Letters.] If a slave, who is being bought or promised, is in the power of the enemy, Octavenus was rather of the opinion that the purchase and stipulation are valid, because there is commercial relations (commercium) between the buyer and the seller; for he held that there is rather a difficulty in delivering him than a natural impossibility, even if his delivery ought to be suspended by the office of the judge until he can be delivered.