It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him), he says: We were with the Messenger of Allah (peace and blessings be upon him) in a battle. People think that this was the battle of Banu Mustaliq. During this, a Muhajir struck an Ansari on his back, so the Ansari cried out: "O Ansar! Come here!" and the Muhajir also called the Muhajirin for help. The Noble Prophet (peace and blessings be upon him) heard these words and said: "What are these calls of ignorance for?" It was told to him that one of the Muhajirin had struck an Ansari on his back, so the Noble Prophet (peace and blessings be upon him) said: "Leave such things, these are foul, i.e., seditious and mischievous matters." Sayyiduna Jabir (may Allah be pleased with him) says: When the Muhajirin migrated to Madinah, their number was much less than the Ansar, but later the number of Muhajirin increased. When the matter between the Muhajirin and Ansar reached the chief of the hypocrites, Abdullah bin Ubayy, he said: "Have the Muhajirin gone so far now? By Allah! If we return to Madinah, the honorable ones will surely expel the lowly ones from Madinah." Sayyiduna Umar (may Allah be pleased with him) heard this, so he came to the service of the Noble Prophet (peace and blessings be upon him) and said: "O Messenger of Allah! Give me permission, I will sever the neck of this hypocrite." The Noble Prophet (peace and blessings be upon him) said: "O Umar! Leave him, lest people start saying that Muhammad (peace and blessings be upon him) kills his own companions."