What is the ruling on the fasting of a woman who becomes pure from her menstruation during the day but does not perform the full ritual bath until the midday prayer? Is it permissible for her to fast that day?

The questioner : What do you say about the one who says: If a woman becomes pure during the day and does not perform the full ritual bath until the midday prayer, her fast for that day is not valid?

The Shaykh : Her fast for that day is not valid, and she knew this.

The questioner : If a woman becomes pure during the day.

The Shaykh : And she knew this.

The questioner : ... the call to the midday prayer, her fast for that day is not valid?

The Shaykh : Of course, because that day began for her while she was menstruating, and a menstruating woman does not fast. However, she abstains from food and drink, and she must make up that day.