(26) باب الْجِهَادُ مِنَ الإِيمَانِ
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 myfollowers, 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."
Reference: Sahih al-Bukhari 36
In-book reference: Book 2, Hadith 29
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 2, Hadith 36