Musnad Abu Ya'la al-Mawsili 9:1

Ibrahim ibn Muhammad ibn ‘Ar‘arah and Mahmud ibn Khidash narrated to us, they said: Marwan ibn Mu’awiyah narrated to us, he said: Salih ibn Mas’ud narrated to us, he said: I heard Abu Juhayfah saying: We came to the Messenger of Allah (may Allah bless him and grant him peace), and he ordered for us twelve young she-camels. We were in the process of extracting them when his death occurred, so we withheld them from the people until they gathered. He said: I said to Abu Juhayfah, "Tell me about the Messenger of Allah (may Allah bless him and grant him peace)." He said: "He was a white man, and his sideburns had turned grey."