What is "u've'Chol Eretz Achuzaschem" referring to?
Rashi #1 (citing Kidushin 21a): It incorporates houses and Avadim Ivrim which must also be returned in the Yovel. 1
Rashi #2 and Rashbam: With reference to the following Parshah, 2 it is coming to obligate the purchaser to return the field, in the event that the seller comes to redeem it before the Yovel any time after two years.
Ramban, Seforno and Moshav Zekenim: It implies that the Dinim of Sh'mitah and Yovel apply throughout Eretz Yisrael, 3 but not in Chutz la'Aretz ("u've''Chol" comes to imclude Eiver ha'Yarden and the other lands that we possess).
Seforno: The Pasuk is coming to preclude Chutz la'Aretz from the Din of Sh'mitah an Yovel.
Riva (according to R. Eliezer in Kidushin 21a): It obligates one to redeem land which his relative sold.
See Torah Temimah, note 117.
See Ramban's objection to this explanation and Sifsei Chachamim.
Ramban: To remove it from the hand of the person who currently has it - as in Yeshayah, 48:20 and in Sh'mos 6:6 - because Hashem wants to redeem the land from the one to whom He did not initially give it as an inheritance.
What are the implications of "Ge'ulah Titnu la'Aretz"?
Rashbam: The seller retains the right to redeem the field that he sold up until the Yovel. 1
QUESTIONS ON RASHI
Rashi writes that this refers to the following Parshah; the buyer must allow the seller to redeem his field before Yovel. This is difficult however, seeing as the next Parshah begins 'When your brother will become poor'?
Refer to 25:24:1:1,3 & 4.
Mizrachi: It is reasonable that the current Pasuk includes a case relevant to the next Parshah, and "Ki Yamuch?" is as if the Torah had first written 'And what is the case? ? '.