Volume 4, Book 52, Number 213:
Narrated Anas bin Malik:
Once the people got frightened, so Allah’s Apostle rode a slow horse belonging to Abu Talha, and
he set out all alone, making the horse gallop. Then the people rode, making their horses gallop after
him. On his return he said, “Don’t be afraid (there is nothing to be afraid of) (and I have found) this
horse a very fast one.” That horse was never excelled in running hence forward. (Qastalani Vol. 5)