Musnad Abu Ya'la al-Mawsili 154:99

Surayj ibn Yunus narrated to us, Abu Mu'awiyah narrated to us, from 'Abd al-Malik ibn Abjar, from Thawr ibn Abi Fakhitah, from Ibn 'Umar, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, the person of the lowest rank among the people of Paradise is one who looks into his kingdom for two thousand years; he sees its furthest extent, and he looks at his wives and his thrones. And indeed, the person of the highest rank among them is one who looks at the Face of Allah twice every day."