Musannaf Ibn Abi Shaybah 40741 — Reports on the Khawarij

Kathir bin Namir said: We were praying the Friday prayer, with Sayyiduna Ali (may Allah be pleased with him) on the pulpit, when a man stood up and said: "No rule but Allah's is accepted." Then another man stood up and said: "There is no rule except Allah's." Then various people stood up in the corners of the mosque and began to raise the same slogan. Sayyiduna Ali (may Allah be pleased with him) signalled to them with his hand to sit down, and said: "Undoubtedly there is no rule except Allah's, but this is a word of truth by which falsehood is intended. Allah's ruling concerning you is being awaited. For now we have three concessions for you as long as you are with us: we will not prevent you from the mosques of Allah, where the name of Allah is remembered in them; we will not deprive you of fay' as long as our hands and your hands are together; and we will not fight you until you fight us." Then he resumed the sermon.