Sahih al-Bukhari 2968
Sahih al-Bukhari · Book 56: Fighting for the Cause of Allah (Jihaad) · The setting out of the Imam, before the people at the time of fright
Narrated Anas bin Malik:
حَدَّثَنَا مُسَدَّدٌ ، حَدَّثَنَا يَحْيَى ، عَنْ شُعْبَةَ ، حَدَّثَنِي قَتَادَةُ ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ قَالَ كَانَ بِالْمَدِينَةِ فَزَعٌ، فَرَكِبَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَرَسًا لأَبِي طَلْحَةَ، فَقَالَ " مَا رَأَيْنَا مِنْ شَىْءٍ، وَإِنْ وَجَدْنَاهُ لَبَحْرًا " .
Once there was a feeling of fright at Medina, so Allah's Messenger (ﷺ) rode a horse belonging to Abu Talha and (on his return) he said, "We have not seen anything (fearful), but we found this horse very fast."