Pause and identify the Companions, scholars, and prominent figures. A new challenge: Who am I? I am one of the Companions of the Prophet, peace be upon him. I am among the leaders of the Muhajirun and those whose migration is counted as two migrations. I was known for the Qur'an, for knowledge, and for judicial authority. I witnessed the Battle of Khaybar and the events thereafter with the Prophet, peace be upon him. And I participated with the Caliphs after him in the Islamic conquests. When the Prophet, peace be upon him, finished the campaign of Hunayn, he sent my uncle, Abu 'Amir, in command of an army to Awtas. He sent me with him, and we encountered Durayd ibn al-Simmah. Durayd was killed, and Allah defeated his companions. My uncle, Abu 'Amir, was struck by an arrow in his knee. I rushed to him and said, "O my uncle, who shot you?" He pointed to a man and said, "That is the one who shot me." I headed toward him and caught up with him. When the man saw me, he fled. I pursued him, saying, "Are you not ashamed? Will you not stand and fight?" He stopped for me, and we exchanged two sword strikes. I killed him. Then I returned to my uncle and said, "Allah has killed the man who shot you." He said, "Extract the arrow," so I extracted it. Water flowed from the wound. He said, "O son of my brother, convey my greetings to the Prophet, peace be upon him." "And tell him to ask Allah to forgive me." He then appointed me as his successor over the people. He remained for a short while, then passed away. I then returned to Medina. I entered upon the Prophet, peace be upon him, in his house. I informed him of our news and the news of my uncle, Abu 'Amir. I said to him, "My uncle sends you his greetings." "And he asks you to seek forgiveness for him." The Prophet, peace be upon him, called for water and performed wudu. Then he raised his hands until I saw the whiteness of his armpits. And he said, "O Allah, forgive Abu 'Amir." "O Allah, place him on the Day of Resurrection above many of Your creation." I said, "O Messenger of Allah, and ask for forgiveness for me as well." He prayed for me and said, "O Allah, forgive his sins." "And grant him an honorable entrance on the Day of Resurrection." I spoke to the people one day and said to them: "We went out with the Messenger of Allah, peace be upon him, on a military expedition." "We were six men sharing one camel, taking turns riding it." "Our feet became wounded, and our toenails fell off from the long walking." "We used to wrap rags around our feet." "That expedition was named the Battle of Dhat al-Riqa' (the Battle of the Rags)." "Because of the rags we used to wrap around our feet." Then I regretted having mentioned this. Fearing it might be showing off, or that I had disclosed something of my deeds. So, who am I?