ذَٰلِكَ بِأَنَّهُمْ ءَامَنُوا۟ ثُمَّ كَفَرُوا۟ فَطُبِعَ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَفْقَهُونَ ٣
This is because they believed and then abandoned faith. Therefore, their hearts have been sealed, so they do not comprehend
Surah Al-Munaafiqoon
Surah Al-Munaafiqoon 63:3
This is verse 3 of Surah Al-Munaafiqoon (63:3) of the Holy Quran, shown in Arabic with its translation.