It wasnarrated that Abu Juhaifah said:
"I saw the Messenger of Allah(ﷺ), and this part of his hair was white" – meaning the tuft ofhairbetween the lower lip and the chin. (RU)
English reference (RU): Vol. 4, Book 32, Hadith 3628 (RU)
Arabic reference (RU): Book 32, Hadith 3759 (RU)