Issue: If a woman menstruates during the day in Ramadan, her fast is invalid, and if she becomes pure during the day, she is not required to abstain for the rest of the day.

The Shaykh : If a woman menstruates during the day, what is the ruling on her fast? It is invalid. If she becomes pure during the day, is she required to fast? No, she is not required to abstain, because this abstention does not benefit her in any way, and she gains nothing from it. The day is not respected in her case, because it has been permitted for her to break her fast at the beginning of it, and the day cannot be divided. It has been mentioned to us from Ibn Mas'ud (may Allah be pleased with him) that he said: "Whoever eats at the beginning of the day, let him eat at the end of it", meaning that whoever is permitted to eat at the beginning of the day is permitted to eat at the end of the day. Now, these are the conditions for the obligation of fasting.