Good Deed #538 – Miswaak your tongue
It was narrated that Abu Musa (RA) said: “I came to the Messenger of Allah (ﷺ) when he was using the Siwak, and the end of the Siwak was on his tongue, and he was saying, “‘A’,’a’.”
أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدَةَ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، قَالَ أَخْبَرَنَا غَيْلاَنُ بْنُ جَرِيرٍ، عَنْ أَبِي بُرْدَةَ، عَنْ أَبِي مُوسَى، قَالَ دَخَلْتُ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم وَهُوَ يَسْتَنُّ وَطَرَفُ السِّوَاكِ عَلَى لِسَانِهِ وَهُوَ يَقُولُ “ عَأْعَأْ ” .
Sunan an-Nasa’i 3
https://sunnah.com/nasai:3