Chapter on What Invalidates Fasting, What Impairs the Conditions of Its Obligation, and Nullifies Fasting

Muhammad ibn Yaqub, from Ahmad ibn Muhammad, from Ali ibn al-Husayn, from Ahmad ibn al-Hasan, from his father, from Ali ibn Ribat, from Ibn Muskan, from Layth al-Muradi, who said: I (narrator) asked Abu Abdillah عليه السلام, peace be upon him, about ‘the fasting person undergoing cupping and pouring oil into his ear.’ Imam عليه السلام said: “There is no harm, except snuff (al-suoot), for it is disliked.”