Chapter on Ruling of Treatment for the Fasting Person, Kohl, Cupping, the Tooth-Stick (Siwak), Entering the Bathhouse, and Other than That

And Muhammad ibn al-Hasan al-Saffar narrated from Ibrahim ibn Hashim, from Musa ibn Abi al-Hasan al-Razi, from Abu al-Hasan al-Ridha عليه السلام, peace be upon him, who said: Some of those who sat with the Imam عليه السلام asked him about ‘the tooth-stick (siwak) in the month of Ramadan.’ Imam عليه السلام said: “It is permissible.” Then some of them said: “The moisture of the tooth-stick enters the inside (of the throat).” So he (narrator) asked: “What do you say about ‘the moist tooth-stick, whose moisture enters the throat?’” Imam عليه السلام said: “Water for rinsing the mouth is more moist than the moist tooth-stick.”