This series of papers studies the importance of community-building and Prophet Muhammad’s efforts to implement it. This part further builds upon the concept of truthfulness in Islamic theology and is moral system; of Allah as the true being, revelation as the truth, the prophets’ mission to serve the truth, and the importance of communities striving to become truthful.This series is based on a nine-session course conducted by the author on Community Building at the Islamic Centre of England in London in 2009.