Musannaf Ibn Abi Shaybah

Hazrat Ahnaf bin Qais narrates: He says that I came to Madinah Munawwarah and entered Masjid Nabawi. While I was praying, a tall man of wheat-colored complexion entered, whose beard and head hair were white. He had shaved his head and his appearance was similar in parts. Then I went outside and started following him. I asked, "Who is this?" People said, "Abu Dharr."