Narrated Samurah ibn Jundub: The Prophet (peace be upon him) named our cavalry “the Cavalry of Allah,” when we were struck with panic, and when panic overtook us, the Apostle of Allah (peace be upon him) commanded us to be united, to have patience and perseverance; and to be so when we fought.

Sunan of Abu-Dawood – Book 14 Hadith 2554