The Prophet Muhammad (peace be upon him) said: "Help your brother, whether he is an oppressor or he is oppressed." People asked, "…It is right to help him if he is oppressed, but how should we help him if he is an oppressor?" The Prophet said, "By preventing him from oppressing others." Sahih Al-Bukhari, 3:624
The Prophet Muhammad (peace be upon him) said: "Verily, a man teaching his child manners is better than giving one bushel of grain in alms." (Muslim)
The Prophet Muhammad (peace be upon him) said: "Be not like the hypocrite who, when he talks, tells lies; when he gives a promise, he breaks it; and when he is trusted, he proves dishonest." (Bukhari & Muslim)