The Case of One Who Fasts Optionally while He Is Obligated to Make Up for Fasting of the Month of Ramadan He Has Missed

1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn ‘Isma‘il has narrated from al-Fadl ibn Shadhan from abu al-Sabbah al-Kinaniy who has said the following: “I once asked abu ‘ Abd Allah عليه السلام, about a man who owes several days of Qada’ (compensatory fast) for the fast of the month of Ramadan if he can fast optional fast. He (the Imam) said, ‘No, he cannot do so before completing Qada’ (compensatory fast) of what is due upon him of the month of Ramadan.’”