Musannaf Ibn Abi Shayba 1:230

Muhammad ibn Mus’ab narrated to us, from al-Awza’i, from Yahya ibn Abi Kathir, from Abu Salamah, from Ja’far ibn ‘Amr ibn Umayyah al-Damri, from his father, who said: I saw the Prophet, may Allah bless him and grant him peace, wiping over the khuffayn (leather socks) and the turban.