Tawoos says: Sayyiduna Muawiyah (may Allah be pleased with him) said to Sayyiduna Abdullah bin Abbas (may Allah be pleased with him): "Do you not know that I trimmed the hair of the Messenger of Allah (peace and blessings be upon him) with a broad blade?" Sayyiduna Ibn Abbas (may Allah be pleased with him) said: "No, I do not." Then he said: "This statement is a proof against Sayyiduna Muawiyah (may Allah be pleased with him)."