Performance of Contract

It was the seller's duty to deliver the thing sold to the buyer, and if the thing was a res mancipi, the transfer had to be by mancipation. The seller's obligation to deliver possession was conditioned upon the buyer's paying the price; he was not obliged to deliver until the entire price was paid, unless the sale was on credit. If the buyer did not pay on delivery, he was liable for interest. And if the sale was on credit, interest was due from the expiration of the credit. But if before the price was paid the seller's title was questioned, the buyer was not required to pay unless sureties were given to guarantee the return of the money in case of eviction.

The payment of the price was essential to the passing of title, and even though the thing was delivered it did not become the buyer's property until the price was paid or secured, unless the sale was on credit, in which case the title passed on delivery. The buyer was bound not merely to pay the price, but to give a good title to the money. Payment with money not belonging to the buyer was no payment.

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Effects of Marriage with Manus

Slavery by Birth

Mandate (Mandatum)