[IULIANUS libro quinto decimo digestorum. ] §18.5.5.prCum emptor uenditori uel emptori uenditor acceptum faciat, uoluntas utriusque ostenditur id agentis, ut a negotio discedatur et perinde habeatur, ac si conuenisset inter eos, ut neuter ab altero quicquam peteret, sed ut euidentius appareat, acceptilatio in hac causa non sua natura, sed potestate conuentionis ualet.
[JULIANUS, in Book 15 of his Digests.] When a buyer releases the seller, or a seller releases the buyer, the intention of both parties is shown as aiming at this, namely, that the transaction be departed from and that it be treated just as if it had been agreed between them that neither should demand anything from the other; but to make it more clearly apparent, acceptilatio in this case is valid not by its own nature, but by the power of the agreement.
§18.5.5.1Emptio nuda conuentione dissoluitur, si res secuta non fuerit.
A purchase is dissolved by bare agreement, if performance has not followed.
§18.5.5.2Mortuo autem homine perinde habenda est uenditio ac si traditus fuisset, utpote cum uenditor liberetur et emptori homo pereat: quare nisi iusta conuentio interuenerit, actiones ex empto et uendito manebunt.
But if the slave dies, the sale must be treated just as if he had been delivered, since the seller is released and the slave perishes to the detriment of the buyer; therefore, unless a valid agreement intervenes, the actions on purchase and sale will remain.