Jami` at-Tirmidhi 1687
Narrated Anas:
"The Prophet (ﷺ) was the nicest person among the people, the most generous of the people, and the bravest among the people." He said: "The inhabitants of Al-Madinah became freightened one night upon hearing a loud noise." He said: "So the Prophet (ﷺ) met them upon an unsaddled horse belonging to Abu Talhah, with a sword hanging around his neck. He said: 'I found him to be (quick) like the sea.'" - meaning the horse.
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم مِنْ أَجْرَإِ النَّاسِ وَأَجْوَدِ النَّاسِ وَأَشْجَعِ النَّاسِ ‏.‏ قَالَ وَقَدْ فَزِعَ أَهْلُ الْمَدِينَةِ لَيْلَةً سَمِعُوا صَوْتًا قَالَ فَتَلَقَّاهُمُ النَّبِيُّ صلى الله عليه وسلم عَلَى فَرَسٍ لأَبِي طَلْحَةَ عُرْىٍ وَهُوَ مُتَقَلِّدٌ سَيْفَهُ فَقَالَ ‏"‏ لَمْ تُرَاعُوا لَمْ تُرَاعُوا ‏"‏ ‏.‏ فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ وَجَدْتُهُ بَحْرًا ‏"‏ ‏.‏ يَعْنِي الْفَرَسَ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ صَحِيحٌ ‏.‏