Aḥmad b. ʿAbdah al-Baṣrī > Ḥammād > Ghaylān > Abū Burdah > Abū Mūsá

"I came to the Messenger of Allah ﷺ when he was using the Siwak, and the end of the Siwak was on his toungue, and he was saying, "'A','a'."

أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدَةَ الْبَصْرِيُّ قَالَ أَخْبَرَنَا حَمَّادٌ قَالَ حَدَّثَنَا غَيْلَانَ عَنْ أَبِي بُرْدَةَ عَنْ أَبِي مُوسَى قَالَ

دَخَلْتُ عَلَى رَسُولِ اللهِ ﷺ وَهُوَ يَسْتَنُّ وَطَرَفُ السِّوَاكِ عَلَى لِسَانِهِ وَهُوَ يَقُولُ «عَأْ عَأْ»