Non-Muslims Entering Mosques for Work and Maintenance

Question:
May Allah reward you. And regarding what you have from non-Muslims, concerning mosques, maintenance, and cleanliness.

Answer:
The Sacred Mosque is not entered by anyone but Muslims. As for the other mosques, there is no harm in entering them, especially out of necessity for work or tasks they perform. The Christians entered upon the Messenger of Allah (peace and blessings be upon him) while he was in their mosque; they negotiated with him. Thumamah ibn Uthal was a polytheist and was captured; the Prophet (peace and blessings be upon him) tied him to a pillar of the mosque for days while he was a polytheist. Then Allah granted him Islam, so he embraced Islam and testified that there is no god but Allah and that Muhammad is the Messenger of Allah. So there is no harm in a disbeliever or polytheist entering the mosque for a permissible matter, for a permissible matter. Yes.