❖ Question:
When a woman sees blood but is not certain that it is definitely menstrual blood, what is the ruling concerning her fast on that day?
✔ Answer:
The woman’s fast on that day is valid and correct, because the basic principle is that it is not menstrual blood unless it becomes clear that it is indeed menstrual blood.
(Fatwa by: Muhammad ibn Salih al-Uthaymeen رحمه الله)