What is the ruling regarding a woman experiencing a regular, uniform menstrual pattern (Mutafeqah)?

Chapter on Menstruation

Al-Mughni

Book of Purification

Book 2 · Issue 1 · Bab 12

Open in Qurani

Primary text

If a woman experiences menstruation for an equal number of days each time, such as four days every month, she must cease praying and fasting only for those four days. The ruling follows the established, consistent pattern.