A non-Muslim entering the Masjid

Q: Is it permissible to allow Kafirs (disbelievers), Christians or Jews to enter Masjids, to sit and watch Muslims while offering Salah or listen to the Friday Khutbah (sermon)? Is there any specific stipulations pertaining to their entering Masjids, such as being in a state of purity, wearing modest dress or sitting in a specific place in the Masjid? What is the ruling on allowing them to enter the Masjid in case they are hired to do some repairs in the Masjid?

A: There is no harm in allowing them to enter the Masjid for the reasons specified in the question unless the harm that may result from their entering the Masjid will be greater than the benefit and unless it will cause no harm for Muslims. As to allowing the Kafirs to enter the Masjid to do some repairs or to restore the Masjid, that is not permissible because they are not trustworthy.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.