Musannaf Ibn Abi Shaybah 34301 — The virtues of Ali bin Abi Talib

Mu'awiyah bin Qurrah (may Allah have mercy on him) said: Al-Hasan (may Allah have mercy on him) and I were sitting and talking when al-Hasan (may Allah have mercy on him) mentioned Sayyiduna Ali (may Allah be pleased with him) and said: "He showed the people the path, and he set the religion straight for them when it had become crooked."