It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Tomorrow I will give the flag to the person who loves Allah and His Messenger, and Allah will grant victory at his hand." Sayyiduna Umar (may Allah be pleased with him) says: "That day, I never desired leadership." Then the Prophet (peace and blessings be upon him) called Sayyiduna Ali (may Allah be pleased with him), gave the flag into his hand, and said: "Go, and do not look back." Sayyiduna Ali (may Allah be pleased with him) went, then stopped and, without turning, asked: "O Messenger of Allah! On what things should I fight them?" The Prophet (peace and blessings be upon him) said: "Fight them until they testify that there is no god but Allah, and Muhammad (peace and blessings be upon him) is the Messenger of Allah. When they say this, their blood and wealth will be protected, except by the right of Islam, and their reckoning is with Allah."