The Sufficient (Vol 6) · Hadith 2181 (#Ḥadīth #4)

وَ بِهَذَا الْإِسْنَادِ قَالَ قَالَ أَمِيرُ الْمُؤْمِنِينَ ( عليه السلام ) السِّوَاكُ مَطْهَرَةٌ لِلْفَمِ وَ مَرْضَاةٌ لِلرَّبِّ .

4. Through the same chain of narrators as that of the previous Hadith the following is narrated: “He (the Imam) said that ’Amir al-Mu’minin has said, ‘Brushing one’s teeth cleanses the mouth and earns Allah’s pleasure.’”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).