Imsāk: abstain during what remains of the current day.
Qaḍāʾ: fast a replacement complete day later.
Kaffarah: a special additional expiation in qualifying cases.
For this mistake, commentary discusses remaining-day imsāk and later qaḍāʾ, but not the special kaffarah. Abstaining until that evening does not substitute for make-up.
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Kitab al-Sawm: Mistaken Dawn or Sunset, Qada and Kaffarah
Imsāk: abstain during what remains of the current day.
Qaḍāʾ: fast a replacement complete day later.
Kaffarah: a special additional expiation in qualifying cases.
For this mistake, commentary discusses remaining-day imsāk and later qaḍāʾ, but not the special kaffarah. Abstaining until that evening does not substitute for make-up.