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. (ID)
English reference (ID): Vol. 4, Book 32, Hadith 3628 (ID)
Arabic reference (ID): Book 32, Hadith 3759 (ID)