It is narrated from Abdur Rahman bin Abi Laila that on the day of the Battle of Siffin, a man from among the people of Syria called out in a loud voice and inquired: "Is there anyone among you by the name of Uwais Qarni?" The people replied: "Yes." He said: "I heard the Messenger of Allah, peace and blessings be upon him, say that the most virtuous person among the Tabi'in will be Uwais Qarni."