[If] one sells his slave to a gentile or to [someone] outside Eretz Yisrael, he goes free. Captives may not be redeemed for more than their value, for the sake of the general good. And captives may not be helped to escape, for the sake of the general good. Rabban Shimon ben Gamliel says: For the benefit of the captives. Torah scrolls, phylacteries, and mezuzos may not be bought from gentiles for more than their value, for the sake of the general good.

One who divorces his wife because of a bad reputation may not take [her] back; because of a neder, he may not take [her] back. R' Yehudah says: [If because of] any neder which was known to the public, he may not take [her] back, but [if because of a neder] not known to the public, he may take [her] back.  R' Meir says: [If he divorced her because of] any neder which requires the inquiry of a sage, he may not take [her] back, but [if because of a neder] which does not require the inquiry of a sage, he may take [her] back. Said R' Elazar: They prohibited this only because of the other. Said R' Yose bar Yehudah: It occurred in Sidon that one said to his wife: “Konam, if I do not divorce you,” and he divorced her, and the Sages allowed him to take her back, for the sake of the general good.