“Allah is Witness over what we say.” It was also said: He is the Guardian.
Ka‘b said: When Jacob said, “Allah is the best Guardian,” Allah, exalted is He, said: “By My might, I shall surely restore both of them to you, after you placed your trust in Me.”
“And he said, ‘O my sons, do not enter through one gate, but enter through separate gates. Yet I cannot avail you against Allah in any way. Judgment belongs to Allah alone. In Him I place my trust, and in Him let those who trust place their trust.’ (67) And when they entered as their father had instructed them, it did not avail them against Allah in any way, except to fulfil a need in Jacob’s heart. Indeed, he possessed knowledge because of what We had taught him, but most people do not know. (68)”
“And he said”—that is, Jacob said to them when they wished to depart from him—“O my sons, do not enter through one gate, but enter through separate gates.” This was because he feared the evil eye for them, since they had been granted beauty, strength, and tall stature, and they were the sons of one man. He therefore instructed them to enter separately, lest they be afflicted by the evil eye; for the evil eye is real (1). It is related in a report: “The evil eye can bring a man to the grave and a camel to the cooking pot” (2).
It is reported from Ibrahim al-Nakha‘i that he said this because he hoped that, by dispersing, they might see Joseph. But the first view is more correct.
Then he said: “Yet I cannot avail you against Allah in any way.” That is, if Allah has decreed something concerning you, it will befall you whether you are together or apart. What has been decreed must come to pass, and caution does not ward off divine decree. “Judgment belongs to Allah alone”: this was Jacob’s entrusting of his affairs to Allah. “In Him I place my trust”: that is, I rely upon Him. “And in Him let those who trust place their trust.”
“And when they entered as their father had instructed them”: that is, through separate gates. It was also said that the city was al-Farama, which had four gates, and they entered it through its gates. “It did not avail them”: that is, it did not ward off anything from them against Allah. Allah, exalted is He, confirmed Jacob in what he had said. “Except to fulfil a need”: that is, a desire “in Jacob’s heart, which he fulfilled.” He feared for them with the concern of a father for his sons, and he acted accordingly. “Indeed, he”—meaning Jacob, peace be upon him—“possessed knowledge”: that is, he acted as he did out of knowledge, not ignorance, “because of what We had taught him”: that is, because We had taught him. It was also said: Indeed, he acted in accordance with what he knew.