Prioritizing making up fasts from Ramadan over fasting the six days of Shawwal

Question:
The questioner also asks about a group of patients with kidney failure regarding the issue of the harms of Ramadan if it conflicts with the six days of Shawwal. Is it possible for the six days of Shawwal to be considered as making up the missed days, rather than being from the voluntary fasts of Shawwal?

Answer:
No, he must start with making up the missed days, because that is obligatory. Fasting the six days is a recommended practice (sunnah), and one does not prioritize a recommended practice over an obligation. The Prophet (peace and blessings be upon him) said: So, following the six days of Shawwal for one who fasted Ramadan, whose obligation is to make up what he missed in Ramadan, he must start with making up the missed days, even if it takes the whole month. This is obligatory upon him. If six days remain at the end of the month, he fasts them voluntarily, counting them as the six days. Yes.