Musannaf Ibn Abi Shaybah 32456 — Book of Faith

Ma'qil al-Khath'ami (may Allah have mercy on him) said that a man came to Sayyiduna Ali (may Allah be pleased with him) while he was in the courtyard of the house. He said: "O Commander of the Believers! What is your (may Allah be pleased with him) opinion about a woman who does not pray?" He (may Allah be pleased with him) said: "Whoever does not pray is a disbeliever."