هديه صلى الله عليه وسلم في التطهر
Hudhayfah ibn al-Yamān (may Allah be pleased with him) reported that when the Messenger of Allah (may Allah's peace and blessings be upon him) used to get up at night, he would cleanse his mouth with the tooth-stick.
عن حذيفة بن اليمان -رضي الله عنهما- قال: «كان رسول الله -صلى الله عليه وسلم- إِذَا قَام من اللَّيل يُشُوصُ فَاهُ بِالسِّوَاك».
شرح الحديث :
In his love of cleanliness and his dislike of unpleasant odor, the Prophet (may Allah's peace and blessings be upon him) would brush his teeth with the tooth-stick when he used to wake up from sleep after a long night, during which the mouth's odor is likely to change, in order to get rid of the odor and gain energy after having been overcome by sleep, because among the characteristics of using the tooth-stick are alertness and invigoration.