Quran 39:22 from Surah Az-Zumar on Divine Marvels.
أَفَمَن شَرَحَ ٱللَّهُ صَدۡرَهُۥ لِلۡإِسۡلَٰمِ فَهُوَ عَلَىٰ نُورٖ مِّن رَّبِّهِۦۚ فَوَيۡلٞ لِّلۡقَٰسِيَةِ قُلُوبُهُم مِّن ذِكۡرِ ٱللَّهِۚ أُوْلَٰٓئِكَ فِي ضَلَٰلٖ مُّبِينٍ
English translation: So is (one for) whom Allah has expanded Allah has expanded his breast for Islam so he (is) upon a light from his Lord So woe to (those are) hardened their hearts from (the) remembrance of Allah (the) remembrance of Allah Those (are) in error clear
Transliteration: afaman sharaha al-lahu sadrahu lil'is'lami fahuwa ala nurin min rabbihi fawaylun lil'qasiyati qulubuhum min dhik'ri al-lahi ulaika fi dalalin mubinin