He saw the Messenger of Allah ﷺ wiping over his leather socks.
أنه رأى رسول الله ﷺ يمسح على الخفين.
No references are available.
Bukhari (204) narrated it from Abu Naeem, who said, Shayban narrated to us, from Yahya, from Abu Salama, from Jafar bin Amr bin Umaya Damri, that his father informed him, and he related it.