It is narrated from Sayyiduna Ammar bin Yasir (may Allah be pleased with him) that during the expedition of Al-‘Usheirah, I and Ali (may Allah be pleased with him) were together. When the Noble Prophet (peace and blessings be upon him) arrived there, we saw the people of Banu Mudlij working in an orchard at a spring. So Ali (may Allah be pleased with him) said to me,“Abu al-Yaqzan! What do you think, should we go to them and see how they work?”We went to them and watched their work for a while. Then sleep overcame us. So Ali and I walked to a cluster of date palms and lay down on the ground and slept. The Messenger of Allah (peace and blessings be upon him) woke us up by moving us with his foot. We were both covered in dust. On that day, the Messenger of Allah (peace and blessings be upon him) called Sayyiduna Ali (may Allah be pleased with him) by the nickname“Abu Turab,”because dust was visible on his body. Then he (peace and blessings be upon him) said:“Shall I not point out to you the two most wretched men?”We said,“O Messenger of Allah! Of course.”He (peace and blessings be upon him) said:“The red one of Thamud, who hamstrung the she-camel, and the man who (O Ali!) will strike your head until your (beard) is soaked with blood.”