章 63 Al-Munafiqun (The Hypocrites), 节 3

1. ذَٰلِكَ بِأَنَّهُمْ آمَنُوا ثُمَّ كَفَرُوا فَطُبِعَ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَفْقَهُونَ

   That is because they believed, and then they disbelieved; so their hearts were sealed over, and they do not understand.

   63:3

Translation: Saheeh International