פירוש על קידושין 41:19

The Talmud shifts to the question of whether a Hebrew slave sold to an Israelite, and not a Gentile, can be redeemed. Rabbi clearly holds that he cannot, but what about the rabbis. The rabbis could employ either of two midrashic techniques. They could expound on the use of the word “sakhir” and say that the laws referring to being sold to a non-Jew apply to the case of a slave sold to a Jew. Or they could read the word “may redeem him” exclusively—relatives may redeem “him,” the one sold to a non-Jew. But they may not redeem the one sold to a Jew.