Sahih Adab al-Mufrad

Sayyiduna Abu Darda narrates from the Prophet (ﷺ) that he (ﷺ) said: "Shall I not tell you of something even better in rank than prayer, fasting, and charity?" The people said, "Certainly." He (ﷺ) said: "Reconciling between people, and on the contrary, spreading discord among people—this (habit) shaves off (faith)."