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

Miswak of Zaytun (Olive tree) is excellent

suyuti:23846a –

Olive ˹tree˺ miswak is excellent from a blessed tree: it refreshes the mouth, removes cavities, and it is my miswak and the miswak of the prophets before me.  

السيوطي:٢٣٨٤٦a –

"نعْمَ السِّوَاكُ الزَّيتُونُ مِنْ شَجَرَةٍ مُبَارَكَةٍ: يُطيِّبُ الْفَمَ، وَيَذْهَبُ بِالحَفْرِ، وَهُوَ سِوَاكِي وَسِوَاكُ الأَنْبِيَاءِ قَبْلِي".  

[طس] الطبرانى في الأوسط عن معاذ بن جبل