[AFRICANUS libro octauo quaestionum. ] §3.5.48.prSi rem, quam seruus uenditus subripuisset a me uenditore, emptor uendiderit eaque in rerum natura esse desierit, de pretio negotiorum gestorum actio mihi danda sit, ut dari deberet, si negotium, quod tuum esse existimares, cum esset meum, gessisses: sicut ex contrario in me tibi daretur, si, cum hereditatem quae ad me pertinet tuam putares, res tuas proprias legatas soluisses, quandoque de ea solutione liberarer.
[AFRICANUS, Questions, Book VIII] If the buyer has sold a thing which the sold slave had stolen from me, the seller, and that thing has ceased to exist in the nature of things, an action on business managed should be granted to me for the price, just as it ought to be granted if you had managed a business which you believed to be yours, although it was mine; just as, on the contrary, it would be granted to you against me if, while you believed an inheritance belonging to me to be yours, you had paid your own proper things that had been bequeathed, whenever I should be released by that payment.