In the name of Allah the most merciful and beneficial.
I could not observe five fasts of Ramadan due to illness. Now, do you have to keep these fasts continuously? Or can I fast once a week?
Regarding the missing ‘fast of Ramadan due to illness, all the Imams agree that a person who has not been able to fast for a few days will have to make up for it for a few days. The proof is the word of Allah: “ And whoever of you is ill or on a journey, he shall fill it up on other days. [ Surat al-Baqara, verse 185 ]
It is not obligatory to fast continuously. You can fast continuously if you wish; Again, if you wish, you can fast separately. You can fast once a week or once a month as much as you can. The proof of this is the above verse. In this verse, there is no condition for fasting continuously. Rather, it is obligatory to fast for the same number of days only for the number of days that have been broken.
The Standing Committee was asked: Is it permissible to observe missing fast of Ramadan irregularly?
In reply, they said: Yes, it is permissible to fast Ramadan irregularly. The proof is the word of Allah: “ And whoever of you is ill or on a journey, he shall fill it up on other days. [ Surat al-Baqara, verse: 165 ] Allaah has not made it a condition for fasting to make up the missed fasts. [Compiled from the Fatwas of the Standing Committee (10/346)]
The fatwa of Sheikh bin Baz (15/35) states: If he does not fast for two days, three days or more, then it is obligatory on him to make up these fasts. But you don’t have to keep it constantly. It is better to keep it constantly. And if you can’t keep it up, there’s no problem.
Allah is fully aware of all things.