Mishkat al-Masabih 11 Business Transactions كتاب البيوع 179

وَعَن قَتَادَة قَالَ: سَمِعْتُ أَنَسًا يَقُولُ: كَانَ فَزَعٌ بِالْمَدِينَةِ فَاسْتَعَارَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَرَسًا مِنْ أَبِي طَلْحَةَ يُقَالُ لَهُ: الْمَنْدُوبُ فَرَكِبَ فَلَمَّا رَجَعَ قَالَ: «مَا رَأَيْنَا مِنْ شَيْءٍ وَإِن وَجَدْنَاهُ لبحرا»

Qatada told of hearing Anas say that when there was an alarm in Medina the Prophet borrowed from Abu Talha a horse called al-Mandub which he rode. When he returned he said, “I did not see anything, and I found that the horse could run as speedily as a great river.” (Bukhari and Muslim.)