‏الإمارة : Hadeeth No:4694 It has been narrated on the authority of Anas b. Malik that the Messenger of Allaah (may peace he upon him) said: Who seeks martyrdom with sincerity shall get its reward, though he may not achieve it....

‏فضائل الصحابة‏ : Hadeeth No:5937 Abu 'Uthman reported on one of the days when Allaah's Messenger (sallAllaahu alayhi wa sallam) was fighting and none remained with him save Talha and Sa'd....