Musnad Abu Ya'la al-Mawsili 252:19

Al-Qawariri narrated to us, Bishr bin al-Mufaddal narrated to us, from Abd al-Rahman bin Ishaq, from Abu Hazim, from Sahl bin Sa’d, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, the people of Paradise will see the chamber from the chambers of Paradise just as you see the brilliant star in the eastern or western horizon."