THE answer for my question :) Before the battle of Uhud began, the Prophet (s.a.w) had ordered a group of archers to remain on one side of a mountain to offer protection to the rear of the Muslim army. However, when the Muslims started to defeat their enemies, forty of ...the archers raced down the mountain in order to receive their share of the war booty. The Quraish used this opportunity to circle back and attack the rear of the Muslim army. They even got close enough to attack to Holy Prophet (s.a.w) himself, injuring him severely. During those awkward moments of the Messenger of Allah's (s.a.w) life, a group of Muslim heroes gathered around the Prophet (s.a.w) forming a shield to protect him from the Kuffar. Among them was Abu Dujana. He stood before the Messenger of Allah (s.a.w), shielding him from the arrows with his back. While these assaults on the Prophet's (s.a.w) life continued, Uthman ibn Abdullah ibn Al-Mugheerah (one of the enemy) approached him and tried to kill him. But Al-Harith bin As-Simma came to his defense and sliced into Uthman's leg making him fall to the ground. Then Al-Harith killed him. But another Makkan horseman, called 'Abdullah bin Jabir, attacked Al-Harith bin As-Simma, and cut deeply into his shoulder with his sword and he (al-Harith) was carried to the camp of the Muslims suffering from serious wounds. Soon afterwards, Abu Dujana, with his red headband and the Prophet's (s.a.w) sword, came upon 'Abdullah bin Jabir and cut his head off with a single stroke. During the confusion caused by the archers' mistake of abandoning their post, many Sahaba were martyred. So Quraish started to mutilate their bodies to appease their pride over their defeat at Badr. Ka'b bin Masaid, "I was one of those Muslims who fought in Uhud and witnessed the Kuffar's act of barbarity in mutilating the dead bodies, but I left this sight because I couldn't stand it. Then I saw an armed stout mushrik pass through the Muslims and say, 'Gather them up like sheep are gathered and slaughtered!' Similarly I saw an armed Muslim waiting for him. I walked towards them till I stood behind him (the Muslim). Comparing both of them, I considered that the Kafir was superior to the other in arms and size. I kept on watching them while they engaged in man-to-man combat. The Muslim raised his sword up and swung it down hard on the Kafir, so forcefully that the blade went down his hip and split him in half. When the Muslim unveiled his face, he looked at me and said, "What do you think of that, Ka'b? I am Abu Dujana."