Musnad Ahmad 5:304

'Abdullah narrated to us, Suwayd ibn Sa'id al-Harawi narrated to us, Yunus ibn Abi Ya'fur narrated to us, from 'Awn ibn Abi Juhayfah, from his father, who said: I was with 'Umar while he was covered with his garment, having fulfilled his vow (passed away). Then 'Ali came and uncovered the garment from his face, then said: "May the mercy of Allah be upon you, O Abu Hafs. For by Allah, there remains no one after the Messenger of Allah, may Allah bless him and grant him peace, whom I would love more to meet Allah, the Exalted, with his record (of deeds) than you."