Chapter on Rulings on Forgetfulness (Sahw) in Prayer and What Requires Repeating of Prayer

Ali bin Ibrahim, from his father, from Ibn Abi Umayr, from Marazim, who said: Isma‘il bin Jabir asked Abu Abdillah عليه السلام, saying: "May Allah سبحانه وتعالى set you right, I have many missed ‘nafilah’ prayers, what should I do?" Imam عليه السلام said: "Make them up (as qadha)." I asked: "They are more than that (too many)." Imam عليه السلام said: "Make them up." I said: "I cannot count them." Imam عليه السلام said: "Approximate (estimate)." Marazim said: I was ill for four months and did not perform ‘nafilah’ prayers during that time, so I asked (Imam عليه السلام: "May Allah سبحانه وتعالى set you right or may I be your ransom, I was ill for four months and did not perform any ‘nafilah’ prayers during that time." Imam عليه السلام said: "There is no ‘qadha’ upon you. The sick is not like the healthy. Whatever overcomes one by Allah’s سبحانه وتعالى will, then Allah سبحانه وتعالى is more entitled to excuse him in it."