Bava Metzia

But that is near to profit [if it appreciates] and remote from loss.  — He replied: Since he accepts the risk of depreciation, it is near to both [profit and loss]. MISHNAH. IF A MAN LENDS [MONEY] TO HIS NEIGHBOUR, HE MUST NOT LIVE RENT-FREE IN HIS COURT, NOR AT A LOW RENT, BECAUSE THAT CONSTITUTES USURY. GEMARA. R. Joseph b. Minyomi said in R. Nahman's name: Though it has been ruled, if one dwells in his neighbour's court without his knowledge, he need not pay him rent, yet if he lent him [money] and then dwelt in his court, he must pay him rent. What does he teach us? We have [already] learnt: IF A MAN LENDS [MONEY] TO HIS NEIGHBOUR, HE MUST NOT LIVE RENT-FREE IN HIS COURT, NOR AT A LOW RENT, BECAUSE THAT CONSTITUTES USURY? — If from the Mishnah, I might have thought that that holds good only of a court which exists for letting, and a man [sc. the creditor] who generally rents. But if it is a court which is not for letting, and a person who does not generally rent,  I would say, It is not so:  therefore he teaches us [otherwise]. Others say: R. Joseph b. Minyomi said in R. Nahman's name: Though it has been ruled, If a man dwells in his neighbour's court without his knowledge, he is not bound to pay him rent, [yet if he proposes to him,] 'Lend me money, and live in my court,' he [the creditor] must pay rent. Now, he who rules, [Even] if he had [already] lent him, [he must pay rent], will certainly hold the same if he proposed, 'Lend me [etc.].' But he who rules, [if he says,] 'Lend me,' [he must pay him rent], will, in the case where he has already lent him, hold that it is unnecessary. Why so? Since he did not originally lend the money for this purpose, there is no objection to it. R. Joseph b. Hama seized the slaves of people who owed him money and put them to service. Said his son Raba to him: Why does the Master do thus? — He replied: I agree with R. Nahman. For R. Nahman said: A slave['s labour] is not worth the bread he eats.  Said he to him: perhaps R. Nahman said this only of such as his servant Daru, who went about dancing in taverns; but did he say this of other servants! — He replied: I am of the same opinion as R. Daniel son of R. Kattina, who said in Rab's name: If one seizes his neighbour's slave and puts him to service, he is free [from payment],