[Machine] I came to the Prophet ﷺ and found him cleaning his teeth with a toothstick in his hand, while saying "a'a, a'a" and the toothstick was on his tongue as if he was rinsing his mouth. Isma'il narrated to us from 'Ali ibn 'Abdullah, who narrated from Hammad ibn Zaid, who mentioned it in his chain of narration from Abu Musa, who said: I entered upon the Prophet ﷺ and found him cleaning his teeth with a toothstick and the end of the toothstick was on his tongue.  

أَتَيْتُ النَّبِيَّ ﷺ فَوَجَدْتُهُ يَسْتَاكُ بِسِوَاكٍ بِيَدِهِ وَهُوَ يَقُولُ عَا عَا وَالسِّوَاكُ فِي فِيهِ كَأَنَّهُ يَتَهَوَّعُ 142 قَالَ إِسْمَاعِيلُ حَدَّثَنَا بِهِ عَلِيُّ بْنُ عَبْدِ اللهِ قَالَ ثنا حَمَّادُ بْنُ زَيْدٍ فَذَكَرَهُ بِإِسْنَادِهِ عَنْ أَبِي مُوسَى قَالَ دَخَلْتُ عَلَى النَّبِيِّ ﷺ وَهُوَ يَسْتَاكُ وَطَرَفُ السِّوَاكِ عَلَى لِسَانِهِ