CHAPTER: Regarding Leaving Buttons Undone.
Muawiyah bin Qurrah quoted his father as saying: I came to the Messenger of Allah صلی اللہ علیہ وسلم 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.