Az Zumar, 22 Ayah
39:22
أَفَمَن شَرَحَ ٱللَّهُ صَدۡرَهُۥ لِلۡإِسۡلَٰمِ فَهُوَ عَلَىٰ نُورٖ مِّن رَّبِّهِۦۚ فَوَيۡلٞ لِّلۡقَٰسِيَةِ قُلُوبُهُم مِّن ذِكۡرِ ٱللَّهِۚ أُوْلَٰٓئِكَ فِي ضَلَٰلٖ مُّبِينٍ ٢٢
'Afaman Sharaĥa Al-Lahu Şadrahu Lil'islāmi Fahuwa `Alá Nūrin Min Rabbihi ۚ Fawaylun Lilqāsiyati Qulūbuhum Min Dhikri Al-Lahi ۚ 'Ūlā'ika Fī Đalālin Mubīnin
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.