Theses de emptione et venditione

the contract is absolute, the risk of the sold thing immediately pertains to the buyer, just as does the profit, even if that thing has not yet been handed over to the buyer.

XV.

For whatever happens without the deceit and fault of the seller, the seller is secure regarding it: unless delay intervenes.

XVI.

For if the seller causes a delay in handing it over, the risk is his own.

XVII.

The buyer's own delay also harms him: for if the buyer causes a delay in receiving the sold thing, the seller is liable not for his fault, but only for deceit.

XVIII.

But if both are in delay, the later delay causes harm, by providing for the interest of emerging damage, not of lost profit.

XIX.

Likewise, once this contract of buying and selling is perfected, one is not allowed to repent: but the buyer is compelled to give the price to the seller, and interest from the time of delivery: conversely, the seller must hand over the thing to the buyer, with accessories and fruits from the time of the sale: so that by that giving and delivery, ownership is transferred to the recipient, or eviction is guaranteed.