Exodus 22:3

3.He should make full restitution. These words, as I have said, are connected with the first verse, since here the execution of the punishment is only enjoined; as if God forbade thieves to be spared, but that they should pay either twofold or quadruple, or even quintuple, according to the measure of their crime. But, if they were unable to pay, He commands them to be sold as slaves, which also was the custom at Rome. Whence the saying of Cato, (136) “that private thieves lived in bonds and fetters, but public ones in gold and purple.” And since this condition was a harsh one, a caution is expressly given, that they were not to be absolved on the score of their poverty. If any one should ask whether it was lawful for the owner of the thing stolen to recover double or quadruple its value, I answer, that what God awards, a man has the best of rights to; meanwhile, in equity men were bound to take care that they did not grow rich at the expense of others, but rather were they to apply whatever they gained to pious and holy uses.