Mukhtasar Bukhari

It is narrated from the conqueror of Persia, Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him), that he said: I saw two men in the Battle of Uhud with the Messenger of Allah (peace and blessings be upon him), wearing white clothes and fighting fiercely on his behalf. I had never seen them before nor after that.

The conqueror of Persia, Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him), says that the Messenger of Allah (peace and blessings of Allah be upon him) on the day of Uhud took arrows from his quiver and placed them before me and said: “(O Sa’d [may Allah be pleased with him]) Shoot arrows, may my parents be sacrificed for you.”