Sahih al-Bukhari 2862
Sahih al-Bukhari · Book 56: Fighting for the Cause of Allah (Jihaad) · Riding on an unmanageable animal or a stallion horse
Narrated Anas bin Malik:
حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ ، أَخْبَرَنَا عَبْدُ اللَّهِ ، أَخْبَرَنَا شُعْبَةُ ، عَنْ قَتَادَةَ ، سَمِعْتُ أَنَسَ بْنَ مَالِكٍ ـ رضى الله عنه ـ قَالَ كَانَ بِالْمَدِينَةِ فَزَعٌ، فَاسْتَعَارَ النَّبِيُّ صلى الله عليه وسلم فَرَسًا لأَبِي طَلْحَةَ، يُقَالُ لَهُ مَنْدُوبٌ فَرَكِبَهُ، وَقَالَ " مَا رَأَيْنَا مِنْ فَزَعٍ، وَإِنْ وَجَدْنَاهُ لَبَحْرًا " .
There was a feeling of fright in Medina, so the Prophet (ﷺ) borrowed a horse called Mandub belonging 'to Abu Talha and mounted it. (On his return), he said, "I did not see anything of fright and I found this horse very fast."