(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. (RU)
Reference (RU): Sunan an-Nasa'i 1622 (RU)
In-book reference (RU): Book 20, Hadith 25 (RU)
English translation (RU): Vol. 2, Book 20, Hadith 1623 (RU)