Sayyiduna Abu Juhayfah (may Allah be pleased with him) said: I saw the Messenger of Allah (peace and blessings be upon him); this (hair of the chin) of his (peace and blessings be upon him) was white, and he pointed to the hair below his lower lip.
Amr bin Khalid added in his narration: He was asked: How old were you at that time? He said: I used to make arrows and fit them with feathers.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18536