‘Ata’ related from Ibn ‘Abbas: Joseph’s brothers did not recognize him until he removed the crown from his head. He had a mark on his temple, and Jacob had a similar one, as did Isaac and Sarah—a mark resembling a mole. They then recognized him and said, “Are you indeed Joseph?”
It was also said that they said this merely as a supposition, until he said, “I am Joseph, and this is my brother” (1)—Benjamin. “Allah has certainly favored us”: that is, He has bestowed His favor upon us by reuniting us.
“Indeed, whoever fears Allah”—by fulfilling the obligatory duties and avoiding acts of disobedience—“and is patient”—with regard to what Allah has forbidden him—“then Allah does not allow the reward of those who do good to go to waste.” Ibn ‘Abbas said: He fears Allah by avoiding adultery and remains patient in being unmarried. Mujahid said: He avoids sin and bears imprisonment patiently.
“They said, ‘By Allah, Allah has certainly preferred you over us, and we have surely been sinful.’ (91) He said, ‘No reproach will there be upon you today. May Allah forgive you, for He is the Most Merciful of the merciful. (92) Go with this shirt of mine and cast it over my father’s face; he will regain his sight. Then bring all your family to me.’ (93)”
They said this by way of apology: “By Allah, Allah has certainly preferred you over us”; that is, Allah chose you and granted you superiority over us. “And we have surely been sinful”; that is, in what we did to you, we were nothing but mistaken sinners. It is said: one is described as having deliberately sinned when the act was intentional, whereas one is described as having erred when it was unintentional (2).
Joseph said—being forbearing—“No reproach will there be upon you today”: there shall be no rebuke for you today, nor will I mention your sin to you after today. “May Allah forgive you, for He is the Most Merciful of the merciful.”
When Joseph disclosed his identity to them, he asked them about his father. He said, “What has become of my father after me?” They replied, “He has lost his sight.” So he gave them his shirt and said:
“Go with this shirt of mine and cast it over my father’s face; he will regain his sight”; that is, he will see again. It was also said that it means: he will come to me with his sight restored, because Joseph had summoned him.