The Case of One Who Owes Fasting of Two Consecutive Months but an Obstacle Prevents Him

8. A number of our people have narrated from Sahl ibn Ziyad from al-Hassan ibn Mahbub from Ali ibn Ri’ab from Zurarah who has said the following: “I once asked abu Ja‘far عليه السلام, about a man who kills a person by mistake in a sacred month. He (the Imam) said, ‘Blood money has become substantial on him. He is required to set a slave free or fast for two consecutive months of the sacred ones.’ I then asked, ‘What happens if something takes place in between?’ He (the Imam) said, ‘Give an example.’ I said, ‘If ‘Id day or the days of tashriq (11, 12, and 13) come in between. He (the Imam) said, ‘He is required to fast because it is a binding right upon him.’”