Sunan At-Tirmidhi

Narrated Anas bin Malik: ""The Prophet (ﷺ) rode a horse belonging to Abu Talhah called Mandub. He said: 'There is nothing to be frightened of, and we found him to be (quick) like the sea.'"" [Abu 'Eisa said:] There is something on this topic from Ibn 'Amr Al-'As