Qur'an 9:101

وَمِمَّنْ حَوْلَكُم مِّنَ ٱلْأَعْرَابِ مُنَـٰفِقُونَ ۖ وَمِنْ أَهْلِ ٱلْمَدِينَةِ ۖ مَرَدُوا۟ عَلَى ٱلنِّفَاقِ لَا تَعْلَمُهُمْ ۖ نَحْنُ نَعْلَمُهُمْ ۚ سَنُعَذِّبُهُم مَّرَّتَيْنِ ثُمَّ يُرَدُّونَ إِلَىٰ عَذَابٍ عَظِيمٍ

And among those around you of the wandering Arabs there are hypocrites, and among the townspeople of Al-Madinah (there are some who) persist in hypocrisy whom thou (O Muhammad) knowest not. We, We know them, and We shall chastise them twice; then they will be relegated to a painful doom.