Muawiyah bin Qurrah quoted his father as saying: I came to the Messenger of Allah ﷺ with a company of Muzainah and we swore allegiance to him. The buttons of his shirt were open. I swore allegiance to him and I put my hand inside the collar of his shirt and felt the seal. Urwah said: I always saw Muawiyah and his son opening their buttons of the collar during winter and summer. They never closed their buttons.
Hadith Referenceسنن ابي داود / كتاب اللباس / 4082
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح, مشكوة المصابيح (4336), أخرجه ابن ماجه (3578 وسنده صحيح) والترمذي في الشمائل بتحقيقي (59 وسنده صحيح)
Hadith Takhrij« سنن الترمذی/ الشمائل (58)، سنن ابن ماجہ/اللباس 11 (3578)، (تحفة الأشراف: 11079)، وقد أخرجہ: مسند احمد (3/434، 4/19، 5/35) (صحیح) »