Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tabarani:13598Muḥammad b. Qaḍāʾ al-Jawharī > Muḥammad al-Muthanná

[Machine] The Messenger of Allah ﷺ used to never spend an hour of the night without using the siwak during it.  

الطبراني:١٣٥٩٨حَدَّثَنَا مُحَمَّدُ بْنُ قَضَاءٍ الْجَوْهَرِيُّ ثنا مُحَمَّدٌ الْمُثَنَّى ثنا أَبُو عَلِيٍّ الْحَنَفِيُّ ثنا حُسَامُ بْنُ مِصَكٍّ عَنْ عَطَاءٍ عَنِ ابْنِ عُمَرَ

أَنَّ رَسُولَ اللهِ ﷺ كَانَ لَا يَتَعَارَّ مِنَ اللَّيْلِ سَاعَةً إِلَّا أَجْرَى السِّوَاكَ عَلَى فِيهِ