Commento su Genesi 36:6

i.e. no particular country, but into any country), to stay where-ever he could find room.

AND ESAU TOOK HIS WIVES, AND HIS SONS, AND HIS DAUGHTERS. This journey took place after his brother had returned from Haran and established himself in the land of Canaan, as it says here, and he went into a land away from his brother Jacob. It is possible that this was also after the death of their father. Now when his brother Jacob was still in Haran, Esau was already in Se’ir, as is written above!²⁴⁷32:4. But the explanation of the matter is that Esau went to Se’ir in the days of the chieftains of the Horites, the inhabitants of the land,²⁴⁸Verse 20 here. and he became a lord with a following of four hundred men²⁴⁹Above, 32:7. while his children and family remained in the land of Canaan. It is possible that Esau had some land there in another location, in the plain, not on mount Se’ir. Therefore Scripture speaks of him as living in the land of Se’ir, the field of Edom.²⁴⁷32:4. And after his brother returned to the land of Canaan he vacated before his coming for he knew that the land of Canaan was the inheritance of his brother which his father had given him in his blessing. So he took his sons… and all the souls of his house — a multitude of people — and went to Se’ir to settle there. He then fought with the sons of Se’ir the Horite, the inhabitants of the land,²⁴⁸Verse 20 here. for perhaps they feared him, and they did not permit him to enter their territory into mount Se’ir, where the fortifications were. However, he settled in the field of Edom, in his original location, and the Eternal destroyed them from before them, and they succeeded them, and dwelt in their stead, as it said in Mishneh Torah.²⁵⁰Deuteronomy 2:21. It therefore says there, Because I have given mount Se’ir unto Esau for a possession.²⁵¹Ibid., 2:5.

מפני יעקב אחיו, seeing that Yaakov had bought the birthright, and by rights he was entitled to inherit the estate of his father Yitzchok, i.e. the land of Canaan. Therefore, Esau decided to vacate that land in favour of his brother.