What did Sa`d bin Abi Waqqas witness when he saw Prophet Muhammad (saw) on the day of the battle of Uhud?
 Narrated Sa`d bin Abi Waqqas:                     I saw Allah's Apostle on the day of the battle of Uhud accompanied by two men fighting on his behalf. They were dressed in white and were fighting as bravely as possible. I had never seen them before, nor did I see them later on.