Sahih Bukhari Volume 005, Book 059, Hadith Number 725.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 59. Military Expeditions Led by the Prophet (PBUH) (Al-Maghaazi)
Narrated By Urwa bin Az-Zubair : 'Aisha said, "The Prophet said during his fatal illness, "Allah cursed the Jews for they took the graves of their prophets as places for worship." 'Aisha added, "Had it not been for that (statement of the Prophet) his grave would have been made conspicuous. But he was afraid that it might be taken as a place for worship."