Mishkat al-MasabihChapter 3Hadith 351
Full Sharh — Mishkat al-Masabih 351
وَعَنْ حُذَيْفَةَ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَامَ لِلتَّهَجُّدِ مِنَ اللَّيْلِ يَشُوصُ فَاهُ بِالسِّوَاكِ
English Translation
Hudhaifa said that when the Prophet got up to pray during the night he cleansed his mouth with the tooth-stick. (Bukhari and Muslim.)
Source
Mishkat al-Masabih(مشكاة المصابيح)
Purification
Hadith Number
351