Musannaf Ibn Abi Shaybah 34599 — Reports on refraining from speaking

Umar bin Dharr (may Allah have mercy on him) said: "I was standing with Imam al-Sha'bi (may Allah have mercy on him) one day when a man came to him and asked: 'What do you (may Allah have mercy on him) say about Sayyiduna Ali (may Allah be pleased with him) and Sayyiduna Uthman (may Allah be pleased with him)?' At that he replied: 'I have no need of Sayyiduna Ali (may Allah be pleased with him) and Sayyiduna Uthman (may Allah be pleased with him) pursuing me on the Day of Resurrection over a wrong.'"