Chapter on Itikaf and What Fasting Is Obligatory in It

Ali ibn al-Hasan, from al-Hasan, from Abu Ayyub, from Muhammad ibn Muslim, from Abu Ja’far عليه السلام, peace be upon him: Imam عليه السلام said: “If he observes seclusion for worship (itikaf) for one day, and he had not stipulated a condition, then he may go out and annul his seclusion for worship (itikaf). And if he remains for two days and had not stipulated a condition, then he does not have the right to go out and annul his seclusion for worship (itikaf) until three days have passed.”