The second type fills its entire appointed interval. A Ramadan fast runs from true dawn to sunset. That interval is filled by one fast; two separate fasts cannot be fitted into it.
Its time is:
• Measure (Mi'yar): the full interval measures the fast's duration.
• Cause (Sabab): each part of the time is the cause for the corresponding part of the fast.
• Condition (Shart): this prescribed Ramadan performance belongs to its appointed Ramadan time.
Unlike a prayer, the fast is not completed in a small part of its window. The full dawn-to-sunset interval forms one fast.
- A Ramadan Fast Fills Its Time