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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:8325 – Abū Zakariyyā b. Abū Isḥāq al-Muzakkī And ʾAbū Bakr b. al-Ḥasan al-Qāḍī > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Baḥr b. Naṣr > Quriʾ > ʿAbdullāh b. Wahb Akhbarak Sufyān al-Thawrī > ʿĀṣim b. ʿUbaydullāh b. ʿUmar b. al-Khaṭṭāb > ʿAbdullāh b. ʿĀmir b. Rabīʿah al-ʿAdawī from his father

[Machine] I cannot estimate or count how many times I have seen the Prophet of Allah ﷺ performing miswak while fasting.  

البيهقي:٨٣٢٥ – أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ الْمُزَكِّي وَأَبُو بَكْرِ بْنُ الْحَسَنِ الْقَاضِي قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا بَحْرُ بْنُ نَصْرٍ قَالَ قُرِئَ عَلَى عَبْدِ اللهِ بْنِ وَهْبٍ أَخْبَرَكَ سُفْيَانُ الثَّوْرِيُّ أَنَّ عَاصِمَ بْنَ عُبَيْدِ اللهِ بْنِ عُمَرَ بْنِ الْخَطَّابِ حَدَّثَهُ عَنْ عَبْدِ اللهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ الْعَدَوِيِّ عَنْ أَبِيهِ قَالَ

مَا أُحْصِي وَلَا أَعُدُّ مَا رَأَيْتُ رَسُولَ اللهِ ﷺ يَتَسَوَّكُ وَهُوَ صَائِمٌ  

See similar narrations below:

Collected by Abū Dāwūd, Aḥmad
abudawud:2364 – [Chain 1] Muḥammad b. al-Ṣabbāḥ > Sharīk [Chain 2] Musaddad > Yaḥyá > Sufyān > ʿĀṣim b. ʿUbaydullāh > ʿUbaydullāh b. ʿĀmir b. Rabīʿah from his father

I have seen the Messenger of Allah ﷺ using a tooth-stick while he was fasting. Musaddad added in his version: "more often than I could count."  

أبو داود:٢٣٦٤ – حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ حَدَّثَنَا شَرِيكٌ ح وَحَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا يَحْيَى عَنْ سُفْيَانَ عَنْ عَاصِمِ بْنِ عُبَيْدِ اللَّهِ عَنْ عُبَيْدِ اللَّهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ عَنْ أَبِيهِ قَالَ

رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَسْتَاكُ وَهُوَ صَائِمٌ زَادَ مُسَدَّدٌ مَا لاَ أَعُدُّ وَلاَ أُحْصِي  

ahmad:15688 – Yaḥyá > Sufyān > ʿĀṣim b. ʿUbaydullāh > ʿAbdullāh b. ʿĀmir b. Rabīʿah from his father

I have seen the Messenger of Allah ﷺ using a tooth-stick while he was fasting. Musaddad added in his version: "more often than I could count." (Using translation from Abū Dāʾūd 2364)   

أحمد:١٥٦٨٨ – حَدَّثَنَا يَحْيَى عَنْ سُفْيَانَ عَنْ عَاصِمِ بْنِ عُبَيْدِ اللهِ عَنْ عَبْدِ اللهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ عَنْ أَبِيهِ قَالَ

رَأَيْتُ رَسُولَ اللهِ ﷺ يَسْتَاكُ مَا لَا أَعُدُّ وَلَا أُحْصِي وَهُوَ صَائِمٌ