Mukhtasar Bukhari (Abridged) 1206 — The best believer is one

Narrated Abu Huraira (may Allah be pleased with him): I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "Whoever fights in the way of Allah, and Allah knows best who fights in His way, his example is like that of a person who fasts continuously during the day and stands in prayer throughout the night. And Allah has taken it upon Himself that whoever fights in His way, if He causes him to die, He will admit him to Paradise (without reckoning), or He will return him safely with reward and spoils of war."