Sahih Bukhari Volume 5, Book 64, Hadith 4319

حَدَّثَنِي مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا غُنْدَرٌ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي إِسْحَاقَ، سَمِعَ الْبَرَاءَ ـ وَسَأَلَهُ رَجُلٌ مِنْ قَيْسٍ ـ أَفَرَرْتُمْ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم يَوْمَ حُنَيْنٍ فَقَالَ لَكِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم لَمْ يَفِرَّ، كَانَتْ هَوَازِنُ رُمَاةً، وَإِنَّا لَمَّا حَمَلْنَا عَلَيْهِمِ انْكَشَفُوا، فَأَكْبَبْنَا عَلَى الْغَنَائِمِ، فَاسْتُقْبِلْنَا بِالسِّهَامِ، وَلَقَدْ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَلَى بَغْلَتِهِ الْبَيْضَاءِ، وَإِنَّ أَبَا سُفْيَانَ آخِذٌ بِزِمَامِهَا وَهْوَ يَقُولُ ‏{‏أَنَا النَّبِيُّ لاَ كَذِبْ‏}‏‏.‏ قَالَ إِسْرَائِيلُ وَزُهَيْرٌ نَزَلَ النَّبِيُّ صلى الله عليه وسلم عَنْ بَغْلَتِهِ‏.‏

Narrated By Al-Bara : When a man from Qais (tribe) asked him "Did you flee leaving Allah's Apostle on the day (of the battle) of Hunain?" Al-Bara' replied, "But Allah's Apostle did not flee. The people of Hawazin were good archers, and when we attacked them, they fled. But rushing towards the booty, we were confronted by the arrows (of the enemy). I saw the Prophet riding his white mule while Abu Sufyan was holding its reins, and the Prophet was saying "I am the Prophet undoubtedly." (Israil and Zuhair said, "The Prophet dismounted from his Mule.")