1.

Rashi (citing the Sifri #1), Ramban #1, Rashbam, Targum Onkelos and Targum Yonasan: It entails moving back a neighbor's border-markers, in order to expand the borders of one's own field. ¹ .

2.

Ramban #2 and R. Bachye #2: Refer to 19:14:2:1.

3.

R. Bachye #3: Perehaps it is a prohibition against denying that Hashem created the world. ²

4.

Ba'al ha'Turim: It is a warning to Beis Din not to switch an Ir Miklat for another town.

5 Alshich: It is a warning against sinning and causing Eretz Yisrael to shrink and diminish its initial boundaries. ³

6.

Sifri #2: It incorporates placing a vessel underneath the vine (while harvesting it) and helping one of the poor to collect [Leket, Shikchah or Pe'ah] more than others.

7.

Sifri #3: It is a warning against switching the opinions of R. Eliezer and R. Yehoshua when one holds Tahor, and the other, Tamei. ⁴

8.

Sifri #4: It entails selling one's ancestors' burial site ⁵ - provided at least one member of the family has already been buried there. ⁶

9.

Midrash Mishlei 22:28: It is a warning against changing the customs of earlier generations.

10.

Shabbos 85a: It entails altering the boundaries that earlier Chachamim established - with regard to the distance that one must leave when planting different species. ⁷

1.

Sifri: To render someone who does so guilty of two La'avin. ¹

1.

Ramban #1 and R. Bachye #1: It incorporates a prohibition against changing the borders of a field that Elazar ha'Kohen, Yehoshua bin Nun and the princes of the tribes designated to a tribe or to an individual. ¹

2.

Ramban #2: With reference to 19:14:1:1 - it mentions "asher Gavlu Rishonim" only because it is unusual to move the border-markers of a new property, since everybody knows who the owner is.

3.

R. Bachye #2: With reference o 19:14:1:3 - "asher Gavlu ha'Rishonim" refers to the Avos and Moshe Rabeinu, who demonstrated their belief testified to the creation in all that they did. ²

4.

Shabbos, 85a: It is a warning to learn from the B'nei Se'ir "who dwelt in the land", ³ and who determined which stretch of land is good for planting olive-trees, which, for vine-trres and which for fig-trees. ⁴

5.

Refer to 19:14:1:4 and note 2. ⁵

1.

Teshuvos R. Sherira Ga'on:: To teach us the importance of a Minhag. ¹

1.

Rashi and Ramban (citing the Sifri): This implies that although someone who moves one's neighbors border-markers in Chutz la'Aretz transgresses only "Lo Sigzol" but not "Lo Sasig G'vul". ¹

1.

Oznayim la'Torah: Because both of them (are Mitzvos that are connected to the land - of Eretz Yisrael and) are not applicable in Chutz la'Aretz. ¹ .

1.

Ba'al ha'Turim: To prevent one from saying that, since one may kill a murderer, one may also move his borders, since his property ought not to be more valuable than his life.

2.

Alshich: It is a hint that on account of murder, our ancestors caused Eretz Yisrael to shrink. ¹