It is narrated from Hazrat Anas (may Allah be pleased with him) that someone advised the Prophet (peace and blessings be upon him) to go to (the chief of the hypocrites) Abdullah bin Ubayy. The Prophet (peace and blessings be upon him) set out riding his donkey, and the Muslims also set out on foot with the Prophet (peace and blessings be upon him). The ground was soft. When the Prophet (peace and blessings be upon him) reached him, he said, "Stay away from me, the smell of your donkey is troubling me." Upon this, an Ansari said, "By Allah! The donkey of the Prophet (peace and blessings be upon him) is more fragrant than you." Then, a man from the people of Abdullah bin Ubayy became angry on his behalf, and then a wave of anger and resentment spread among the companions of both sides, and it came to the point of fighting with branches, hands, and shoes. We learned that this verse was revealed about them: "If two groups of Muslims fight each other, then make peace between them."