Reference: Sharh ‘Umdatil-Fiqh – Tape No.7, Question No.1
Question: There is a masjid in which they have a hall for lessons; is it permissible for a menstruating woman to attend lessons in this hall, whilst seated on a chair?
Response: No. Whatever is within the enclosure of the masjid, the menstruating woman is not allowed to sit therein – not for lessons or other than that, until she [completes her menstrual period and] purifies herself by having a bath [or shower].
