Quran Lessons
If a sick person does not fast in Ramadaan, waiting to recover so that he can make the days up later, then he finds out that his sickness is chronic, he has to feed a poor person for every day that he did not fast. (From the fataawa of Shaykh Ibn 'Uthaymeen).
If a person is waiting to recover from his illness and hopes to get better, but then dies, there is no "debt" owed by him or his heirs.
If a person's sickness is considered to be chronic, so he does not fast and feeds the poor instead, then advances in medical
science mean that there is now a cure, which he uses and gets better, he does not have to make up the fasts he has missed, because he did what he had to do at the time. (Fataawa al-Lajnah al-Daa'imah, 10/195)
(29) If a person is sick, then recovers, and is able to make up the missed fasts but does not do so before he dies, then money should be taken from his estate to feed a poor person for every day that he missed.
If any of his relatives want to fast on his behalf, then this is OK, because it was reported in al-Saheehayn that the Messenger of Allaah (peace and blessings of Allah be upon him) said:
"Whoever dies owing some fasts, let his heir fast on his behalf." (From Fataawa al-Lajnah al-Daa'imah, volume on Da'wah,
806).