Musnad Ahmad 31:732

And with this chain of narration, that the Messenger of Allah, may Allah bless him and grant him peace, said: "Indeed, the person of the lowest status among the people of Paradise is he who has eighty thousand servants and seventy-two wives. And a dome of pearl, chrysolite, and emerald is set up for him, [the size of which is] as the distance between al-Jabiya and Sana'a."