It has been reported on the authority of Salama bin Akwa' who said: On the day of the Battle of Khaibar my brother fought a fierce fight by the side of the Messenger of Allah ( صلی اللہ علیہ وسلم ) . His sword rebounded and killed him. The Companions of the Messenger of Allah ( صلی اللہ علیہ وسلم ) talked about his death and doubted (whether it was martyrdom). (They said): (He is) a man killed by his own weapon, and expressed doubt about his affair. Salama said: When the Messenger of Allah ( صلی اللہ علیہ وسلم ) returned from Khaibar, I said: Messenger of Allah, permit me that I may recite to you some rajaz verses. The Messenger of Allah ( صلی اللہ علیہ وسلم ) permitted him. 'Umar bin Khattab said: I know what you will recite. I recited: By God, if God had guided us not, We would have neither been guided aright nor practised charity, Nor offered prayers. The Messenger of Allah ( صلی اللہ علیہ وسلم ) said: What you have said is true, 'I (continued): And descend on us peace and tranquillity And keep us steadfast if we encounter (with our enemies) And the polytheists have rebelled against us. When I finished my rajaz, the Messenger of Allah ( صلی اللہ علیہ وسلم ) said: Who composed these verses? I said: They were composed by my brother. The Messenger of Allah ( صلی اللہ علیہ وسلم ) said: May God show mercy to him! I said: By God, some people are reluctant to invoke God's mercy on him (because) they say he is a man who died by his own sword. (Hearing this) the Messenger of Allah ( صلی اللہ علیہ وسلم ) said: He died as God's devotee and warrior. Ibn Shihab has said: I asked one of the sons of Salama bin Akwa' about (the death of 'Amir). He related to me a similar tradition except that he said: When I said some people were reluctant invoke God's blessings on him, the Messenger of Allah ( صلی اللہ علیہ وسلم ) said: They lied. ('Amir) died as God's devotee and warrior (in the cause of Allah). For him there is a double reward, and he pointed out this by putting his two fingers together.