From Sahih Bukhari (Hadith 2867):
Narrated Anas bin Malik: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
Reference: Bukhari 2867