(10) باب مَا يَفْعَلُ إِذَا قَامَ مِنَ اللَّيْلِ مِنَ السِّوَاكِ
It was narrated that Hudhaifah said:
"When the Messenger of Allah (ﷺ) got up to pray tahajjud at night, he would brush his teeth with the siwak. (IT)
Reference (IT): Sunan an-Nasa'i 1622 (IT)
In-book reference (IT): Book 20, Hadith 25 (IT)
English translation (IT): Vol. 2, Book 20, Hadith 1623 (IT)