The Messenger of Allah said, "Verily, Allah has revealed to me that you should adopt humility. So that no one may wrong another and no one may be disdainful and haughty towards another."

Riyadh-as-Saliheen by Imam Al-Nawawi, Compiled By Al-Imam Abu Zakariya Yahya bin Sharaf An-Nawawi Ad-Dimashqi, Chapter 279, Hadith 1589 - Sunni Hadith