36:66
وَلَوْ نَشَآءُ لَطَمَسْنَا عَلَىٰٓ أَعْيُنِهِمْ فَٱسْتَبَقُوا۟ ٱلصِّرَٰطَ فَأَنَّىٰ يُبْصِرُونَ
walaw nashāu laṭamasnā ʿalā aʿyunihim fa-is'tabaqū l-ṣirāṭa fa-annā yub'ṣirūna
If it had been Our will, We could have taken away their sight. They would have struggled to find the way, but how could they have seen it?
And if it had been Our Will, We would surely have wiped out (blinded) their eyes, so that they would struggle for the Path, how then would they see?