Sahih al-Bukhari 2961

It is related from Abu Sa'id al-Khudri that the Prophet, may Allah bless him and grant him peace, said, "The people of the Garden will look at the people in the rooms above them as you look at a bright star far on the horizon of the east or the west because of the great distance between them." They asked, "O Messenger of Allah, are those the stations of the Prophets which only they attain?" He replied, "Rather, by the One in whose hand my soul is, they are men who believed in Allah and confirmed the Messengers." IX: Description of the Gates of the Garden The Prophet, may Allah bless him and grant him peace, said, "The one who spends two will be summoned by a gate of the Garden."