كتاب الزكاة
12
The Book of Zakat
(47)
Chapter: The Khawarij and their attributes
(47)
باب ذِكْرِ الْخَوَارِجِ وَصِفَاتِهِمْ ‏

Jabir b. Abdullah reported that a person came to the Messenger of Allah (ﷺ) at Jirana on his way back from Hunain, and there was in the clothes of Bilal some silver. The Messenger of Allah (ﷺ) took a handful out of that and bestowed it upon the people. He (the person who had met the Prophet at Ji'rana) said to him:

Muhammad, do justice. He (the Holy Prophet) said: Woe be upon thee, who would do justice if I do not do justice, and you would be very unfortunate and a loser if I do not do justice. Upon this Umar b. Khattab (Allah be pleased with him) said: Permit me to kill this hypocrite. Upon this he (the Holy Prophet) said: May there be protection of Allah! People would say that I kill my companions. This man and his companions would recite the Qur'an but it would not go beyond their throat, and they swerve from it just as the arrow goes through the prey.
حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحِ بْنِ الْمُهَاجِرِ، أَخْبَرَنَا اللَّيْثُ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ أَبِي، الزُّبَيْرِ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ أَتَى رَجُلٌ رَسُولَ اللَّهِ صلى الله عليه وسلم بِالْجِعْرَانَةِ مُنْصَرَفَهُ مِنْ حُنَيْنٍ وَفِي ثَوْبِ بِلاَلٍ فِضَّةٌ وَرَسُولُ اللَّهِ صلى الله عليه وسلم يَقْبِضُ مِنْهَا يُعْطِي النَّاسَ فَقَالَ يَا مُحَمَّدُ اعْدِلْ ‏.‏ قَالَ ‏"‏ وَيْلَكَ وَمَنْ يَعْدِلُ إِذَا لَمْ أَكُنْ أَعْدِلُ لَقَدْ خِبْتَ وَخَسِرْتَ إِنْ لَمْ أَكُنْ أَعْدِلُ ‏"‏ ‏.‏ فَقَالَ عُمَرُ بْنُ الْخَطَّابِ رضى الله عنه دَعْنِي يَا رَسُولَ اللَّهِ فَأَقْتُلَ هَذَا الْمُنَافِقَ ‏.‏ فَقَالَ ‏"‏ مَعَاذَ اللَّهِ أَنْ يَتَحَدَّثَ النَّاسُ أَنِّي أَقْتُلُ أَصْحَابِي إِنَّ هَذَا وَأَصْحَابَهُ يَقْرَءُونَ الْقُرْآنَ لاَ يُجَاوِزُ حَنَاجِرَهُمْ يَمْرُقُونَ مِنْهُ كَمَا يَمْرُقُ السَّهْمُ مِنَ الرَّمِيَّةِ ‏"‏ ‏.‏
Reference : Sahih Muslim 1063 a
In-book reference : Book 12, Hadith 186
USC-MSA web (English) reference : Book 5, Hadith 2316
  (deprecated numbering scheme)