The ruling on a menstruating woman entering the mosque

Question:
May Allah reward you. The sister Umm Ayman says: Honorable Shaykh, regarding a menstruating woman entering the mosque, is she allowed to enter the mosque and sit in it?

Answer:
It is not permissible for a menstruating woman to enter the mosque except as a passerby to fetch something from the mosque or to pass through a path; there is no harm in passing through, provided she is merely passing by. The Prophet (peace and blessings be upon him) ordered Aisha to bring him the prayer mat, meaning the mat he prays on. He ordered her to bring it from the mosque, as the mat was in the mosque. The Prophet (peace and blessings be upon him) ordered Aisha to bring it from the mosque, which indicates the permissibility of a menstruating woman entering the mosque for a need and then leaving. However, for her to sit in the mosque is forbidden. He (peace and blessings be upon him) said: Yes.