As for His words,
“We shall raise him up blind on the Day of Resurrection” (Taha 124),
the blindness here concerns his evidence. Likewise He says,
“My Lord, why have You raised me up blind”—blind with respect to my proof—“when I used to see?” (Taha 125).
In other words, “I once perceived my argument and used it in debate.” This is what is meant by His statement,
“On that Day the reports will be hidden from them” (al-Qasas 66)—
i.e., the proofs—“so they will not question one another” (al-Qasas 66).
As for His words,
“Today your sight is piercing” (Qaf 22),
the matter is that when the unbeliever emerges from his grave his eyes stare fixedly and he does not blink until he beholds everything he used to deny about the Resurrection. That is the meaning of His saying,
“You were heedless of this; so We have removed your covering from you, and your sight today is acute” (Qaf 22)—
i.e., the covering that belongs to the Hereafter has been lifted. Your vision is now sharp and unblinking until you witness all that you once denied concerning the Resurrection. This, then, is the explanation of the point over which the heretics entertained doubts.⦗1⦘