Surah At-Tawbah — Ayah 77 (9:77)
فَأَعۡقَبَهُمۡ نِفَاقٗا فِي قُلُوبِهِمۡ إِلَىٰ يَوۡمِ يَلۡقَوۡنَهُۥ بِمَآ أَخۡلَفُواْ ٱللَّهَ مَا وَعَدُوهُ وَبِمَا كَانُواْ يَكۡذِبُونَ ٧٧
English translation (Saheeh International)
So He penalized them with hypocrisy in their hearts until the Day they will meet Him - because they failed Allāh in what they promised Him and because they [habitually] used to lie.
Brief commentary
Allah therefore firmly established hypocrisy in their hearts until the Day of Judgement, as a punishment for their breaking their promise with Allah and for their lying.