There are many sound and clear hadith conceming the unlawfulness of building mosques over graves or putting lights on them. Abu Hurairah reported: "The Prophet, peace be upon him, said: 'May Allah destroy the Jews, because they used the graves of their prophets as places of worship.'' (Bukhari and Muslim)

'Aishah reported: "Umm Habibah and Umm Salamah mentioned to Allah's Messenger, peace be upon him, a church in which they saw drawings while in Abyssinia, whereupon he said: 'Those people used to build a place of worship over the grave of a righteous man among them when he died and make such drawings in it.These will be the worst of people in the sight of Allah on the Day of Resurrection.'' (Bukhari and Muslim)