Deuteronomy 15:12

If thy brother, an Hebrew man, or an Hebrew woman, be sold unto thee. — This law is expressly referred to in Jeremiah 34:9; Jeremiah 34:13, as given in the time of the Exodus, and as applicable both to men and women. It first appears in Exodus 21:2, where it occupies the first section of the Sinaitic code. There is no need to suppose that anything enacted here is contradictory to the Law as given there; but there are certain peculiarities about the case of the female slave which create exceptions. (See below on Deuteronomy 15:17.) Rashi notes two fresh points in the Law as given in Deuteronomy: one concerning the Hebrew woman (an Hebrew “or an Hebrewess” — Deuteronomy 15:12; Jeremiah 34:9) and another concerning the “furnishing” (Deuteronomy 15:14).

(12) In the seventh year. — This is to be understood of the Sabbatical year whenever it came. It would rarely happen that the Hebrew slave would serve for the full period of six years.