A Horse which Moved like a Flowing River

Hazrat Anas bin Malik (ra) states that on one occasion, a sudden panic spread in Medina. The Holy Prophet (sa) took the horse of Hazrat Abu Talha (ra) which was not swift, or perhaps it moved slowly. When the Holy Prophet (sa) returned, he said to Hazrat Abu Talha (ra) that he found his horse to have moved like a flowing river, i.e. that it moved at great speed. After this incident, no other horse could keep up in pace with the horse of Hazrat Abu Talha (ra).

(Sahih al-Bukhari, Kitabul Jihad wa As-Siyar, Bab al-Farasu al-Qutuf, Hadith 2867)