QS. Az-Zumar [39:22]
Troops
اَفَمَنْشَرَحَاللّٰهُصَدْرَهٗلِلْاِسْلَامِفَهُوَعَلٰىنُوْرٍمِّنْرَّبِّهٖفَوَيْلٌلِّلْقٰسِيَةِقُلُوْبُهُمْمِّنْذِكْرِاللّٰهِاُولٰۤىِٕكَفِيْضَلٰلٍمُّبِيْنٍ٢٢
afaman syaraha allaahu shadrahu lil‑islaami fahuwa 'alaa nuurin min rabbihi fawaylun lilqaasiyati quluubuhum min dzikri allaahi ulaa‑ika fii dhalaalin mubiinin
So is one whose breast Allah has expanded to [accept] Islam and he is upon a light from his Lord [like one whose heart rejects it]? Then woe to those whose hearts are hardened against the remembrance of Allah. Those are in manifest error. [22]
— Sahih International
