Sayyiduna Muawiyah bin Qurrah (may Allah be pleased with him) narrates from his father, who says: I came to the service of the Messenger of Allah (peace and blessings be upon him) with a caravan from the tribe of Muzaynah. We pledged allegiance to the Messenger of Allah (peace and blessings be upon him). The buttons of his shirt were open, so I put my hand inside his shirt and touched the Seal of Prophethood. Urwah says: Whenever I saw Sayyiduna Muawiyah (may Allah be pleased with him) and his son Iyas in summer or winter, the buttons of their shirts would be open; they would not fasten them.