Musnad Ahmad 95:1

Hassan ibn Musa narrated to us, Ibn Lahi'ah narrated to us, al-Harith ibn Yazid narrated to us, from Abu Mus'ab, who said: An old man from the people of Medina arrived, and they saw him preparing his equipment. They asked him, and he informed them that he intended to go to the Maghrib (the West). He said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "People will go out to the Maghrib; they will come on the Day of Resurrection with their faces like the light of the sun."