Abu Hurairah (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ said, "Allah guarantees that he who goes out to fight in His way believing in Him and affirming the truth of His Messenger, will either be admitted to Jannah or will be brought back to his home (safely) from where he has set out, with whatever reward or share of booty he may have gained. By Him in Whose Hand Muhammad's soul is, if a person is wounded in the way of Allah, he will come on the Day of Resurrection with his wound in the same condition as it was on the day when he received it; its colour will be the colour of blood but its smell will be the smell of musk. By Him in Whose Hand Muhammad's soul is, if it were not to be too hard upon the Muslims, I would not lag behind any expedition to fight in the Cause of Allah, but I have neither abundant means to provide them conveyance (horses) nor all other Muslims have it, and it will be hard on them to remain behind when I go forth (for Jihad). By Him in Whose Hand Muhammad's soul is, I love to fight in the way of Allah and get killed, to fight again and get killed and to fight again and get killed."

[Muslim].

وعن أبي هريرة رضي الله عنه قال: قال رسول الله ﷺ: "تضمن الله لمن خرج في سبيله لا يخرجه إلا جهاد في سبيلي، وإيمان بي وتصديق برسلي فهو علي ضامن أن أدخله الجنة، أو أرجعه إلى منزله الذي خرج منه بما نال من أجر، أو غنيمة، والذي نفس محمد بيده ما من كلم يكلم في سبيل الله إلا جاء يوم القيامة كهيئته يوم كلم، لونه لون دم، وريحه ريح مسك، والذي نفس محمد بيده لولا أن يشق على المسلمين ما قعدت خلاف سرية تغزو في سبيل الله أبدا، ولكن لا أجد سعة فأحملهم ولا يجدون سعة عليهم أن يتخلفوا عني، والذي نفس محمد بيده لوددت أن أغزو في سبيل الله فأقتل، ثم أغزو فأقتل ثم أغزو فأقتل" ((رواه مسلم وروى البخاري بعضه)). (("الكلم" الجرح.))