بيكثال

سورة المنافقون · 63:3

ذَٰلِكَ بِأَنَّهُمْ آمَنُوا ثُمَّ كَفَرُوا فَطُبِعَ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَفْقَهُونَ

That is because they believed, then disbelieved, therefore their hearts are sealed so that they understand not.