It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Help your brother, whether he is an oppressor or oppressed. Someone asked: O Messenger of Allah! I understand that we should help the oppressed, but how can we help the oppressor? The Prophet (peace and blessings be upon him) said: Prevent him from oppression. In another narration it is stated: Stop him from oppression; this, in fact, will be his help.