Abu Dawud
Trials And Fierce Battles
Book Number: 030 / Hadith Number: 4250
Narated By Al-Miqdad ibn al-Aswad : I swear by Allah, I heard the Apostle of Allah (pbuh) say: The happy man is he who avoids dissensions: happy is the man who avoids dissensions; happy is the man who avoids dissensions: but how fine is the man who is afflicted and shows endurance.