Surat At-Tawbah (101-102)

{وَمِمَّنْ حَوْلَكُم مِّنَ الأَعْرَابِ مُنَافِقُونَ وَمِنْ أَهْلِ الْمَدِينَةِ مَرَدُواْ عَلَى النِّفَاقِ لاَ تَعْلَمُهُمْ نَحْنُ نَعْلَمُهُمْ سَنُعَذِّبُهُم مَّرَّتَيْنِ ثُمَّ يُرَدُّونَ إِلَى عَذَابٍ عَظِيمٍ} (التوبة : 101)

101- As for the Bedouins who reside around you and some of your Medina residents, they are hypocrites and used to practice it until they mastered it and knew how to push away charges. O Prophet, you do not know such people because of their master to hypocrisy, but we know them well and nothing of their conditions is hidden to us.

We shall torture them by killing, capture, hunger, and the torment of the grave then on the Day of Recompense they shall be drawn to the torment of Hell and stay there forever.

{وَآخَرُونَ اعْتَرَفُواْ بِذُنُوبِهِمْ خَلَطُواْ عَمَلاً صَالِحاً وَآخَرَ سَيِّئاً عَسَى اللّهُ أَن يَتُوبَ عَلَيْهِمْ إِنَّ اللّهَ غَفُورٌ رَّحِيمٌ} (التوبة : 102)

102- There was another group of people who admitted their lagging behind Jihad for comfort despite their faith and believing. So, they mixed a righteous and bad action together then repented, so perhaps Allah would accept their repentance, for He (Glory be to Him) accepts the repentance of His Servants and admits them to Paradise with His Wide Mercy.

They were the people who tied themselves to the poles of the masjid then the Messenger of Allah (peace be upon him) released them and excused them after the revelation of the Ayah.