كتاب آداب القضاة
Read the English translation first, with the original Arabic directly underneath.
'Abdullah bin Az-Zubair narrated that:
A group from Banu Tamim came to the Prophet (ﷺ) [ﷺ]. Abu Bakr said: "Appoint Al-Qa'qa' bin Ma'bad (as commander or governor)," and 'Umar said: "No, (appoint) Al-Aqra' bin Habis." They argued until they began to raise their voices, then the words were revealed: "O you who believe! Make not (a decision) in advance before Allah and His Messenger..." until the end of the Verse: "And if they had patience till you could come out to them, it would have been better for them."
أَخْبَرَنَا الْحَسَنُ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا حَجَّاجٌ، عَنِ ابْنِ جُرَيْجٍ، قَالَ أَخْبَرَنِي ابْنُ أَبِي مُلَيْكَةَ، عَنْ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، أَخْبَرَهُ أَنَّهُ، قَدِمَ رَكْبٌ مِنْ بَنِي تَمِيمٍ عَلَى النَّبِيِّ صلى الله عليه وسلم قَالَ أَبُو بَكْرٍ أَمِّرِ الْقَعْقَاعَ بْنَ مَعْبَدٍ. وَقَالَ عُمَرُ رضى الله عنه بَلْ أَمِّرِ الأَقْرَعَ بْنَ حَابِسٍ. فَتَمَارَيَا حَتَّى ارْتَفَعَتْ أَصْوَاتُهُمَا فَنَزَلَتْ فِي ذَلِكَ {يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تُقَدِّمُوا بَيْنَ يَدَىِ اللَّهِ وَرَسُولِهِ} حَتَّى انْقَضَتِ الآيَةُ {وَلَوْ أَنَّهُمْ صَبَرُوا حَتَّى تَخْرُجَ إِلَيْهِمْ لَكَانَ خَيْرًا لَهُمْ}.