Sayyiduna Jabir (may Allah be pleased with him) narrates that two boys fought, one of them was from the Muhajirun and the other from the Ansar. The former called out: "O Muhajirun!" and the latter shouted: "O Ansar!" Upon hearing this, the Messenger of Allah (peace and blessings be upon him) came out and said: "Is the call of ignorance being raised?" The Companions said: "No, by Allah! It is just that one boy struck the other on the back with his hand or foot (and that is why the fight happened)." The Prophet (peace and blessings be upon him) said: "Alright, there is no harm, but a person should help his brother, whether he is an oppressor or oppressed. If he is an oppressor, then stop him from oppression, that will be help for him, and if he is oppressed, then support and assist him."