Is it permissible for a menstruating woman to enter the mosque to attend a lesson in knowledge?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: A woman is menstruating and wants to attend the lesson. Is it permissible for her to sit in the back of the women’s section, or not?

Answer:
She does not enter the mosque. Whatever is within the mosque’s enclosure, she does not enter. She should be outside at the door or in a car. As for her entering within the mosque’s enclosure, the women’s section or otherwise, she does not enter. Even the courtyard within the mosque’s enclosure is part of the mosque, and she does not enter it. The rooms whose doors open onto the mosque are part of the mosque, and a menstruating woman does not enter them. Yes. May Allah reward you, Honorable Shaykh. It means she does not sit in it. As for passing through, if a menstruating woman passes by the mosque or takes something from the mosque, there is no harm in that. What is prohibited is sitting. She does not sit in the mosque. As for taking a need from it, there is no harm while she is menstruating. The Prophet (peace and blessings be upon him) said to Aisha: “Hand me the cup from the mosque,” and she was menstruating. She said: “I am menstruating.” He said: “Your menstruation is not in your hand.” So it is permissible for a menstruating woman and a woman in a state of major ritual impurity to pass by the mosque without lingering, and to take a need from it.