Sayyiduna Jabir (may Allah be pleased with him) said: Abu Quhafah was brought to the Messenger of Allah (peace and blessings be upon him), and his head and beard were as though they were white grass, like this white cotton. The Messenger of Allah (peace and blessings be upon him) said: "Take him to one of his womenfolk so that she may dye it, and avoid black."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8293