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

And from him, from al-Hasan, from Safwan, from Ibn Muskan, from al-Halabi, who said: I (narrator) asked Abu Abdillah عليه السلام, peace be upon him: “May the fasting person use the tooth-stick (siwak) with water and with the moist stick, whose taste he finds?” Imam عليه السلام said: “There is no harm in it.”