An elderly person cannot fast and has no reasonable prospect of regaining the capacity, based on a credible assessment. Seven days are missed. On the stated rule, seven daily fidyah allowances are due, using the appropriate food measure.
The critical condition is the lasting inability. If ability actually returns later, the additional Hanafi rule about making up fasts becomes relevant.
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Kitab al-Sawm: Pregnancy, Nursing, Permanent Inability and Fidya
An elderly person cannot fast and has no reasonable prospect of regaining the capacity, based on a credible assessment. Seven days are missed. On the stated rule, seven daily fidyah allowances are due, using the appropriate food measure.
The critical condition is the lasting inability. If ability actually returns later, the additional Hanafi rule about making up fasts becomes relevant.