The Prophet(SAW) said: 'I am the Prophet of Battle; I am the Prophet of Mercy"

“A man said: O Messenger of Allah, guide me to a deed that is equal to Jihad? He said: I do not find an act which is equal to it in reward. He then said: Can you continue prayer and fasting unceasingly as long as the Mujahid is fighting in the cause of Allah? He replied: Who can do this?” (Reported by Al-Bukhari)