Abu Nadr said in his narration, Zuhayr told us, Urwa bin Abdullah bin Qushayr Abu Mahal al-Hanafi told us, Muawiya bin Qurra narrated to me from his father, who said:"I came to the Messenger of Allah ﷺ with a group of men from Mazina, and we pledged allegiance to him while his shirt was unbuttoned. We gave him our pledge, then I slipped my hand into the opening of his shirt and touched the seal."Urwa said, "I never saw Muawiya nor his son," meaning Abu Iyas, said Hasan, "in winter or in summer, except with their lower garments left untied. They would never button them."
حدثنا حسن يعني الأشيب وأبو النضر قالا حدثنا زهير عن عروة بن عبد الله بن قشير
أبو النضر في حديثه حدثنا زهير حدثنا عروة بن عبد الله بن قشير أبو مهل الحنفي قال حدثني معاوية بن قرة عن أبيه قال أتيت رسول الله ﷺ في رهط من مزينة فبايعناه وإن قميصه لمطلق قال فبايعناه ثم أدخلت يدي في جيب قميصه فمسست الخاتم ثم قال عروة فما رأيت معاوية ولا ابنه قال حسن يعني أبا إياس في شتاء قط ولا حر إلا مطلقي إزارهما لا يزرانه أبدا
Its isnad is sahih. Its narrators are leading authorities. Hasan Ashyab is Ibn Musa, Abu Nadr is Hashim bin Qasim, and Zuhayr is Ibn Muawiya bin Hujayj. Urwa bin Abdullah bin Qushayr Abu Mahl Jufi is deemed reliable by the scholars, and Muawiya bin Qurra is reliable, an authoritative, learned, eminent scholar with a retentive memory.The hadith was narrated similarly by Abu Dawud, 4/55, no. 4082, in the Book of Clothing, on undoing buttons, and by Ibn Majah, 2/1184, no. 3578, in like manner.