Hadith 378

Hudhaifa said that when the Prophet got up to pray during the night he cleansed his mouth with the tooth-stick. (Bukhari and Muslim.)

وَعَنْ حُذَيْفَةَ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَامَ لِلتَّهَجُّدِ مِنَ اللَّيْلِ يَشُوصُ فَاهُ بِالسِّوَاكِ

Reference: 5603780
In-book reference: Book 3, Hadith 378