Having already taught us that all property reverts to its original owner in the Yovel (See Pasuk 10), why does the Torah repeat it here?
Rashi: To include a field which the seller's son redeemed, which also reverts to his father in the Yovel. 1
Seforno: To teach us that the seller is permitted to establish ownership over the field in the Yovel] to build houses, dove-cotes and sheep-pens, as long as he does not till the land or perform acts that guard the fruit.
Bechoros, 52b: To incorporate property that one gave as a gift.
See Sifsei Chachamim.
What is "bi'Shenas ha'Yovel ha'Zos" coming to preclude?
Sifra: It precludes Sh'mitah from the Din of Avadim Ivrim going free. 1
See Torah Temimah, note 77.
What are the connotations of "Tashuvu Ish el Achuzaso"?
Seforno: It means that the owners are permitted to return to their fields to build houses and dove-cots and sheep-pens and the like ? but not to till the land or to guard the fruit.
QUESTIONS ON RASHI
Rashi writes that the repetition includes a son who redeemed what his father sold. Why do we not already know this from a Kal va'Chomer - If what others purchased is returned, how much more so what his son purchased? If one was Makdish his Sadeh Achuzah, it returns to him if his son redeemed it from Hekdesh, but not if someone else did (Erchin, 25b)?
Moshav Zekenim: Purchasing from Hekdesh and from a buyer are different. One might have thought that if the son purchases from others, he keeps it, in case people refrain from redeeming. Even though in any case it would return in Yovel, it is disgraceful for others to keep it until Yovel. R. Akiva (Kidushin 15b) says that if relatives redeem someone who sold himself to Nochrim, he serves them, whereas if a stranger redeems him, he goes free. However, the Gemara states that he serves the relatives, to prevent him from quickly selling himself to a Nochri, confident that his relatives will redeem him! Rather, according to R. Akiva 1 , one might have thought to fine the father, in case he sells hinmself and relies on relatives to redeem him.
Riva: The Torah wrote it, even though we could learn it from a Kal va'Chomer.
See Sifsei Chachamim.
R. Yossi ha'Gelili (15b), who holds the opposite, must hold like the Riva. Refer to 23:12:151:2 (PF).
