Ruling 1694 — Fasting (Ṣawm)

Fasting is not obligatory for someone who finds fasting excessively difficult due to old age, nor is it necessary for such a person to make up the fasts. However, for each day [that he does not fast], he must give one mudd of food – i.e. wheat, barley, bread, and suchlike – to a poor person. If fasting for him is not possible at all [as opposed to being excessively difficult], it is not necessary that he give fidyah.[1],[2]