Al-Munāfiqūn 63:3 · سُورَةُ المنافقون

ذَٰلِكَ بِأَنَّهُمْ ءَامَنُوا۟ ثُمَّ كَفَرُوا۟ فَطُبِعَ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَفْقَهُونَ

dhālika bi-annahum āmanū thumma kafarū faṭubiʿa ʿalā qulūbihim fahum lā yafqahūna

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

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