Peace be upon you and Allah's mercy. Peace be upon you. Shaykh, we have come to you from Kuwait.
Shaykh Salim Al-Tawil and Shaykh Hamad Al-Othman send you their greetings and tell you that they love you for the sake of Allah.
Shaykh Salim asks: Is it permissible for a menstruating woman to sit in the mosque to attend lessons? Yes.
I say peace be upon you and upon them, and convey my greetings to them, inshaAllah, when you return. It is not permissible for a menstruating woman to sit in the mosque.
Not to give lessons nor to listen to lessons.
Because a menstruating woman is not allowed to stay in the mosque. Yes, she may pass through the mosque if she is safe.
If she fears that blood might fall and contaminate the mosque, then it is not permissible for her, not even to pass through.