AT TAUBAH — Ayat 77

فَأَعْقَبَهُمْ نِفَاقًا فِي قُلُوبِهِمْ إِلَى يَوْمِ يَلْقَوْنَهُ بِمَا أَخْلَفُواْ اللّهَ مَا وَعَدُوهُ وَبِمَا كَانُواْ يَكْذِبُونَ

So He penalized them with hypocrisy in their hearts until the Day they will meet Him - because they failed Allah in what they promised Him and because they [habitually] used to lie.