Surah Az-Zumar (The Successive Groups), Verse 22

اَفَمَنْ شَرَحَ اللّٰهُ صَدْرَهٗ لِلْاِسْلَامِ فَهُوَ عَلٰی نُوْرٍ مِّنْ رَّبِّهٖ فَوَیْلٌ لِّلْقٰسِیَةِ قُلُوْبُهُمْ مِّنْ ذِكْرِ اللّٰهِ اُولٰٓىِٕكَ فِیْ ضَلٰلٍ مُّبِیْنٍ ۟

Afaman sharahal laahu sadrahoo lil Islaami fahuwa 'alaa noorim mir Rabbih; fa wailul lilqaasiyati quloobuhum min zikril laah; ulaaa'ika fee dalaalim mubeen

“Is one whose heart Allah has opened to Islam, so that he has received Enlightenment from Allah, (no better than one hard-hearted)? Woe to those whose hearts are hardened against celebrating the praises of Allah! they are manifestly wandering (in error)!”

Quran 39:22 (Yusuf Ali Translation)