Musnad Abu Ya'la al-Mawsili 51:4

Abu Sa'id narrated to us, Sufyan ibn 'Uyaynah narrated to us, from Musawir al-Warraq, from Ja'far ibn 'Amr ibn Hurayth, from his father, that he saw the Messenger of Allah (may Allah bless him and grant him peace) wearing a black turban.