The Chapter of Siwak
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 12
وَقَالَ مُوسَى بْنُ جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: «أَكْلُ اَلْأُشْنَانِ يُذِيبُ اَلْبَدَنَ وَ اَلتَّدَلُّكُ بِالْخَزَفِ يُبْلِي اَلْجَسَدَ وَ اَلسِّوَاكُ فِي اَلْخَلاَءِ يُورِثُ اَلْبَخَرَ.
Imam Musa ibn Jafar Al-Kadhim عليه السلام said: "Consuming ushnan (a type of cleansing herb) melts the body, scrubbing with pottery wears out the body, and using a siwak in the bathroom causes bad breath”.
- Ṣaḥīḥ al-Faqīh