question #1 Sahih al-Bukhari 434, Book 8, Hadith 84 : What is the Islamic perspective on building places of worship over graves?

Um Salama told Allah’s Messenger (ﷺ) about a church which she had seen in Ethiopia and which was called
Mariya. She told him about the pictures which she had seen in it. Allah’s Messenger (ﷺ) said, “If any
righteous pious man dies amongst them, they would build a place of worship at his grave and make
these pictures in it; they are the worst creatures in the sight of Allah.”