Musnad Abu Ya'la al-Mawsili 245:18

Dawud ibn Rashid narrated to us, Baqiyyah narrated to us, from Hurayz ibn Uthman, he said: Abd al-Rahman ibn Abi Awf al-Jurashi narrated to me, from Abu Hind al-Bajali, from Mu'awiyah ibn Abi Sufyan, he said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "Migration will not cease until repentance ceases." He said it three times. "And repentance will not cease until the sun rises from its place of setting."