( صحيح البخاري )
Narrated Abu Musa
A man came to the Prophet (peace be upon him) and asked, “O Allah’s Messenger (peace be upon him)! What kind of fighting is in Allah’s cause? (I ask this), for some of us fight because of being enraged and angry and some for the sake of his pride and haughtiness.” The Prophet (peace be upon him) raised his head (as the questioner was standing) and said, “He who fights so that Allah’s Word (Islam) should be superior, then he fights in Allah’s cause.”
(Sahih al-Bukhari)
( صحيح البخاري )
Narrated Abu Huraira
The Prophet (peace be upon him) said, “If somebody fights (or beats somebody) then he should avoid the face.”
(Sahih al-Bukhari)
( جامع الترمذي )
Narrated Ibn ‘Asim Al-Muzani
From his father and he was a Companion who said: “When the Messenger of Allah (peace be upon him) dispatched any army or battalion, he would say to them: ‘If you see a Masjid, or hear someone calling the Adhan, then do not kill anyone.'”
( Jami aTirmidhi )
( اخرجه ابن ماجة والبخاري ومسلم والترمذي)
It was narrated that Ibn ‘Abbas said
“Sa’b bin Jaththamah said: ‘The Prophet (peace be upon him) was asked about the polytheists who are attacked at night, and their women and children are killed.’ He said: ‘They are from among them.’”
(Ibn Majah and Bukhari and Muslim )