Is it permissible to pray in a mosque that has a grave in front of it, in the direction of the qiblah, with a wall separating them that has openings overlooking the grave?

It is impermissible to pray in a mosque adjacent to a grave, especially if the grave is in the direction of prayer (qiblah) of the worshippers, and there is a wall separating them from it, with windows overlooking it. The prohibition of praying in a graveyard has been reported, and Umar (may Allah be pleased with him) saw a man praying near a grave and forbade him. Therefore, the mosque must be moved to another location, or a special fence should be built around the grave to separate it from the mosque wall.