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.
bayhaqi:165Muḥammad b. ʿAbdullāh al-Ḥāfiẓ > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > al-Ḥasan b. ʿAlī b. ʿAffān al-ʿĀmirī > Muḥammad b. Bishr al-ʿAbdī > Saʿīd b. Abū ʿArūbah > Qatādah

[Machine] We used to prepare the Messenger of Allah ﷺ his Siwak (tooth stick) and water for purification. Then Allah would send him as He wished him to be sent during the night, so he would use the Siwak and perform ablution, then he would pray.  

البيهقي:١٦٥أنبأ مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا الْحَسَنُ بْنُ عَلِيِّ بْنِ عَفَّانَ الْعَامِرِيُّ ثنا مُحَمَّدُ بْنُ بِشْرٍ الْعَبْدِيُّ ثنا سَعِيدُ بْنُ أَبِي عَرُوبَةَ ثنا قَتَادَةُ عَنْ زُرَارَةَ بْنِ أَوْفِي عَنْ سَعْدِ بْنِ هِشَامٍ عَنْ عَائِشَةَ فِي حَدِيثٍ طَوِيلٍ قَالَتْ

كُنَّا نُعِدُّ لِرَسُولِ اللهِ ﷺ سِوَاكَهُ وَطَهُورَهُ فَيَبْعَثُهُ اللهُ مَا شَاءَ أَنْ يَبْعَثَهُ مِنَ اللَّيْلِ فَيَتَسَوَّكُ وَيَتَوَضَّأُ ثُمَّ يُصَلِّي  

رَوَاهُ مُسْلِمٌ فِي الصَّحِيحِ عَنْ أَبِي بَكْرِ بْنِ أَبِي شَيْبَةَ عَنْ مُحَمَّدِ بْنِ بِشْرٍ