Verse 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 the hypocrite Arabs around you, as well as the dwellers of Medina, are those who are sticking to hypocrisy that you do not know, but We know them, We will punish them doubly, then they will face a tremendous suffering.