وَلَوْ نَشَاء لَطَمَسْنَا عَلَى أَعْيُنِهِمْ فَاسْتَبَقُوا الصِّرَاطَ فَأَنَّى يُبْصِرُونَ
[36:66]
And if We please We would certainly put out their eyes, then they would run about groping for the way, but how should they see?
If it had been our Will, We could surely have blotted out their eyes; then should they have run about groping for the Path, but how could they have seen?
And had We willed, We verily could have quenched their eyesight so that they should struggle for the way. Then how could they have seen?