63. Munafikun · Verse 3

سورة الـمنافقون
3

ذَٰلِكَ بِأَنَّهُمۡ ءَامَنُواْ ثُمَّ كَفَرُواْ فَطُبِعَ عَلَىٰ قُلُوبِهِمۡ فَهُمۡ لَا يَفۡقَهُونَ

That is because they believed, then they rejected Faith: So a seal was set on their hearts: therefore they understand not.