فَأَعْقَبَهُمْ نِفَاقًا فِي قُلُوبِهِمْ إِلَى يَوْمِ يَلْقَوْنَهُ بِمَا أَخْلَفُواْ اللّهَ مَا وَعَدُوهُ وَبِمَا كَانُواْ يَكْذِبُونَ
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سورة التوبة
(9/77) So He chastised them with setting hypocrisy in their hearts until the Day they shall meet Him, because they kept back from Allah that which they had promised Him, and because they were wont to lie.
Surah At-Tawbah