Musnad Ahmad 31:699

'Abd al-Razzaq narrated to us, Sufyan informed us, from al-A'mash, from 'Atiyyah al-'Awfi, from Abu Sa'id al-Khudri, that the Prophet, peace and blessings of Allah be upon him, said: "Indeed, the people of the high ranks will be seen by those below them, just as you see the star in the horizon of the sky. And Abu Bakr and 'Umar are among them, and they are blessed."