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suyuti:13928a
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السيوطي:١٣٩٢٨a

"خَيْرُ خِصَال الصَّائِم السِّوَاك".  

[ق] البيهقى في السنن وضعفه عن عائشة

See similar narrations below:

Collected by Ibn Mājah, Suyūṭī
ibnmajah:1677ʿUthmān b. Muḥammad b. Abū Shaybah > Abū Ismāʿīl al-Muʾaddib > Mujālid > al-Shaʿbī > Masrūq > ʿĀʾishah

“One of the best actions of the fasting person is using the tooth stick.”  

ابن ماجة:١٦٧٧حَدَّثَنَا عُثْمَانُ بْنُ مُحَمَّدِ بْنِ أَبِي شَيْبَةَ حَدَّثَنَا أَبُو إِسْمَاعِيلَ الْمُؤَدِّبُ عَنْ مُجَالِدٍ عَنِ الشَّعْبِيِّ عَنْ مَسْرُوقٍ عَنْ عَائِشَةَ قَالَتْ

قَالَ رَسُولُ اللَّهِ ﷺ مِنْ خَيْرِ خِصَالِ الصَّائِمِ السِّوَاكُ