Rabbi Yoḥanan said in the name of Rabbi Yosei bar Ḥalafta: Abraham, in whose regard observance of Shabbat is not mentioned, inherited the world with a limited measure, as it is stated: “Arise, walk about in the land to its length and to its breadth, [as to you I will give it]” (Genesis 13:17). But Jacob, in whose regard observance of Shabbat is mentioned, as it is stated: “He encamped before the city” (Genesis 33:18) – he entered with the dimming of the sun and established Shabbat boundaries [for his camp] while it was still day – [he] inherited the world with no limited measure, as it is stated: “Your descendants will be as the dust of the earth, [and you shall spread out to the west, and to the east, and to the north, and to the south]” (Genesis 28:14).