Hadith 3225
Narrated Jabir: I heard the Prophet ﷺ forbid to sit on the grave, to plaster it with gypsum, and to build any structure over it.
Hadith 3226
The tradition mentioned above has also been narrated by Jabir through a different chain of transmitters. Abu Dawud said: Uthman said: "or anything added to it. " Sulaiman bin Musa said: "or anything written on it. " Musaddad did not mention in his version the words "or anything added to it. " Abu Dawud said: The word "and that" (wa an) remained hidden to me.
Hadith 3227
Narrated Abu Hurairah: The Messenger of Allah ﷺ as saying: Allah's curse to be on the Jews, they made the graves of their Prophets mosques.