It is narrated from Safwan bin Sulaim that someone asked the Messenger of Allah, peace and blessings be upon him: "Can a believer be a coward?" He, peace and blessings be upon him, replied: "Yes." Then he asked: "Can a believer be miserly?" He, peace and blessings be upon him, replied: "Yes." Then he asked: "Can a believer be a liar?" He, peace and blessings be upon him, replied: "No."