Abu Dawud
Jihad
Book Number: 008 / Hadith Number: 2554
Narated By Samurah ibn Jundub : The Prophet (pbuh) named our cavalry "the Cavalry of Allah," when we were struck with panic, and when panic overtook us, the Apostle of Allah (pbuh) commanded us to be united, to have patience and perseverance; and to be so when we fought.