What are the implications of "Veyatza me'Imach"?
Sifra: It implies that the master is not permitted to make the Eved Ivri work in a different location than where he lives
See Torah Temimah, note 213.
Since the son of the Eved Ivri was not sold, why does the Torah write "Hu u'Banav Imo"?
Rashi: From the Pasuk we can extrapolate that throughout the term of the Eved Ivri, the master is obligated to feed his children 1 , and when his contract ends, this obligation falls away.
Rosh: Rashi (in Sh'mos 21:3) learned from "ve'Yatz'ah Ishto Imo" that the master must feed the Eved Ivri's wife and children. Really, that Pasuk teaches only about his wife; our Pasuk teaches about his children. See also Torah Temimah, note 214.
Seeing as the Torah has already informed us that a Mocher Atzmo and a Nirtza go out in the Yovel, to whom is the Torah referring when it writes "Veshav el Mishpachto"?
Kidushin, 15a: It is referring to a Ganav whom Beis-Din sold two or three years before the Yovel, who goes free when the Yovel arrives. 1
Kidushin, 21b: It implies that the Eved Ivvri is reinstated to his former Chazakah. Consequenly, an Eved Ivri Kohen cannot have his ear pierced, since ity woul render hima Ba'al-Mum and no longer fit to perform the Avodah. 2
Kidushin, 71a: It teaches us that a Ger, who has no family to which to retuyrn, cannot be sold as an Eved Ivri. 3
What is the Pasuk mean when it writes "ve'El Achuzas Avosav Yashuv"?
Rashi: It means that the Eved Ivri regains his original status, and one is not permitted to taunt him (because he was an Eved).
Moshav Zekenim citing Ri: This is the source that a Nirtza goes free in the Yovel. 1
Rashi (on Pasuk10) learnt this from "ve'Ish el Mishpachto."
Why does the Torah add the (otherwise superfluous word "ve'el Achuzas Avosav Yashuv"?
Oznayim la'Torah: Bearing in mind that his fields have been barren since his sale and contain no produce to collect, the Torah is saying that for now, he returns to his family, who will help him out with loans in the interim, and after the Yovel, he will be able to return to work on his fields until they produce theharvest in the following year.