Musannaf Ibn Abi Shayba 27:356

Zayd ibn al-Hubab narrated to us, he said: Husayn ibn Waqid narrated to me, he said: Abdullah ibn Buraydah narrated to me, from his father, that the Messenger of Allah (peace be upon him) said: "I passed by a palace of gold, overlooking and elevated. I said: 'To whom does this palace belong?' It was said: 'To a man from the Arabs.' I said: 'I am an Arab, to whom does this palace belong?' They said: 'To a man from the nation of Muhammad (peace be upon him).' I said: 'I am Muhammad, to whom does this palace belong?' They said: 'To Umar ibn al-Khattab.'"