وَلَوْ نَشَاءُ لَطَمَسْنَا عَلَى أَعْيُنِهِمْ فَاسْتَبَقُوا الصِّرَاطَ فَأَنَّى يُبْصِرُونَ

Had We wished We would have blotted out their eyes: then, were they to advance towards the path, how would have they seen?