Temporary inability leaves a reasonable prospect of later fasting and ordinarily leads to make-up. Lasting inability means there is no reasonable prospect of regaining the capacity to fast; this is the context of the elderly person’s fidyah.
Hanafi discussions also apply the lasting-inability principle to certain chronic illnesses. A long illness is not automatically permanent: the prognosis must be assessed carefully.
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Kitab al-Sawm: Pregnancy, Nursing, Permanent Inability and Fidya
Temporary inability leaves a reasonable prospect of later fasting and ordinarily leads to make-up. Lasting inability means there is no reasonable prospect of regaining the capacity to fast; this is the context of the elderly person’s fidyah.
Hanafi discussions also apply the lasting-inability principle to certain chronic illnesses. A long illness is not automatically permanent: the prognosis must be assessed carefully.