Fighting for the Cause of Allah (Jihaad)

Bukhari :: Book 4 :: Volume 52 :: Hadith 212

Narrated Anas bin Malik:

Once there was a feeling of fright at Medina, so Allah's Apostle rode a horse belonging to Abu Talha and (on his return) he said, "We have not seen anything (fearful), but we found this horse very fast."