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Narrated Ali ibn AbuTalib: The Prophet (peace_be_upon_him) said: A man called al-Harith ibn Harrath will come forth from Ma Wara an-Nahr. His army will be led by a man called Mansur who will establish or consolidate things for Muhammad's family as Quraysh consolidated them for the Apostle of Allah (peace_be_upon_him). Every believer must help him, or he said: respond to his sermons.