Muhammad ibn Uthman ibn Muhammad informed us. He said: Muhammad ibn Mansur narrated to us. He said: Umar ibn Ali narrated to us. He said: Yazid ibn Harun narrated to us. He said: al-Awwam ibn Hawshab informed us, from Abu Sadiq, from Ali, who said: “Islam rests upon three supports: faith, prayer, and the congregation. No prayer is accepted without faith; whoever has faith prays and joins the congregation.”