Is it permissible to break the fast in Ramadan and make up for the missed days in winter, given that a person who donated one of their kidneys needs to drink large quantities of water and fluids, and the current Ramadan fasting coincides with hot weather, which affects their health?
If abstaining from drinking water during the day for fasting harms your health and there is a fear of falling ill, then it is permissible for you to break your fast in Ramadan, and you must make up for it whenever it becomes easy for you to do so.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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