(23) باب صِفَةِ النَّبِيِّ صلى الله عليه وسلم
Narrated Qatada:
I asked Anas, "Did the Prophet (ﷺ) use to dye (his) hair?" He said, "No, for there were only a few white hairs on his temples."
Reference: Sahih al-Bukhari 3550
In-book reference: Book 61, Hadith 59
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 56, Hadith 750