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

And that which Ahmad ibn Muhammad narrated from Ali ibn al-Hasan, from his father, who said: I (narrator) wrote to Abu al-Hasan عليه السلام: “What do you say regarding gentle treatment with suppositories (ashyaf), which a person inserts while he is fasting?” So the Imam عليه السلام, wrote: “There is no harm in the solid one.”