Is it correct to refuse entry to masjid for not wearing a mask? Is it correct to kick someone out of a masjid, such as during Friday khutbah, for not wearing a mask? Is it correct to deny entry for not having vaccine?
According to Dr. Abdullah bin Hamid Ali, Associate Professor of Islamic law and Prophetic Tradition at Zaytuna College in Berkeley, California, it is not permissible to deny unvaccinated entry to a masjid:
The truth is that the masjid belongs to Allah. “And the mosques belong to God. So, do not call on anyone along with God” (Q 58:18). This means no one person nor group has the authority to determine who can and cannot enter it, besides those who Allah has already barred from it (drunkards, menstruating women, men in major ritual impurity, etc.). Denying someone entry to the masjid without a valid excuse is unlawful, sinful, and unethical.
This also means denying entry to unmasked is also not allowed.
It is not permissible to talk during khutbah or to tell someone to not talk. Therefore, you can't ask someone to leave the masjid during a khutbah.