Chapter 2: Belief
Narrated Abu Huraira: The Prophet (ﷺ) said, "The person who participates in (Holy battles) in
Allah' s cause and nothing compels him to do so except belief in Allah
and His Apostles, will be recompensed by Allah either with a reward,
or booty (if he survives) or will be admitted to Paradise (if he is
killed in the battle as a martyr). Had I not found it difficult for my
followers, then I would not remain behind any sariya going for Jihad
and I would have loved to be martyred in Allah' s cause and then made
alive, and then martyred and then made alive, and then again martyred
in His cause."
Sahih al-Bukhari 36