Musnad Ahmad 1099:6

Yazid ibn Harun narrated to us, he said: Al-Jurayri informed us, he said: I was circumambulating [the Kaaba] with Abu al-Tufayl, and he said: "There remains no one who saw the Messenger of Allah, may Allah bless him and grant him peace, other than me." I said: "And you saw him?" He said: "Yes." I said: "How was his description?" He said: "He was fair-complexioned, handsome, and of moderate build."