Abu Dawud Book 36, Hadith Number 4901.
Chapter : Not known.
Narated By AbudDarda’ : The Prophet (PBUH) said: Shall I not inform you of something more excellent in degree than fasting, prayer and almsgiving (sadaqah)? The people replied: Yes, Prophet of Allah! He said: It is putting things right between people, spoiling them is the shaver (destructive).