פירוש על קידושין 30:4

As occurred earlier, the Talmud rejects the notion that Rabbi does not learn from the repetition of the word “sakhir.” In general he does, but in this case he does not because he reads the verse as specifically limiting the one able to be redeemed by relatives to the Hebrew sold to a Gentile. Thus according to Rabbi we could say that the laws of Exodus apply to the slave described in Leviticus. But we could also distinguish between a slave sold to a Gentile and one sold to a Jew.