(52) باب مَنْ قَادَ دَابَّةَ غَيْرِهِ فِي الْحَرْبِ
Narrated Abu 'Is-haq:
Somebody asked Al-Bar-a bin `Azib, "Did you flee deserting Allah's Messenger (ﷺ) during the battle of Hunain?" Al-Bara replied, "But Allah's Messenger (ﷺ) did not flee. The people of the Tribe of Hawazin were good archers. When we met them, we attacked them, and they fled. When the Muslims started collecting the war booty, the pagans faced us with arrows, but Allah's Messenger (ﷺ) did not flee. No doubt, I saw him on his white mule and Abu Sufyan was holding its reins and the Prophet (ﷺ) was saying, 'I am the Prophet (ﷺ) in truth: I am the son of `Abdul Muttalib.' "
Reference: Sahih al-Bukhari 2864
In-book reference: Book 56, Hadith 80
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 116