Riyad as-Salihin, Book 9, Hadith 1197 (In-Book) ⓘ
Hudaifah (May Allah be pleased with him) reported: Whenever the Messenger of Allah got up (from sleep), he would rub his teeth with Miswak (tooth-stick).[Al-Bukhari and Muslim].
وعن حذيفة رضي الله عنه، قال: كان رسول الله صلى الله عليه وسلم، إذا قام من النوم يشوص فاه بالسواك. ((متفق عليه))