Once the people of Medina were frightened, so the Prophet ﷺ rode a horse belonging to Abu Talha and it ran slowly, or was of narrow paces. When he returned, he said, "I found your (i.e. Abu Talha's) horse very fast. After that the horse could not be surpassed in running..'  

أَنَّ أَهْلَ الْمَدِينَةِ فَزِعُوا مَرَّةً فَرَكِبَ النَّبِيُّ ﷺ فَرَسًا لأَبِي طَلْحَةَ كَانَ يَقْطِفُ أَوْ كَانَ فِيهِ قِطَافٌ فَلَمَّا رَجَعَ قَالَ وَجَدْنَا فَرَسَكُمْ هَذَا بَحْرًا فَكَانَ بَعْدَ ذَلِكَ لاَ يُجَارَى