Language:
كتاب اللباس
77  
Dress
(66)
Chapter: What is said about grey hair
(66)
باب مَا يُذْكَرُ فِي الشَّيْبِ
Sahih al-Bukhari 5895

Narrated Thabit:

Anas was asked whether the Prophet (ﷺ) used a a hair dye or not. He replied, "The Prophet (ﷺ) did not have enough grey hair to dye, (such that) if I wanted to count the fading hairs in his beard (I could have)."

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ ثَابِتٍ، قَالَ سُئِلَ أَنَسٌ عَنْ خِضَابِ النَّبِيِّ، صلى الله عليه وسلم فَقَالَ إِنَّهُ لَمْ يَبْلُغْ مَا يَخْضِبُ، لَوْ شِئْتُ أَنْ أَعُدَّ شَمَطَاتِهِ فِي لِحْيَتِهِ‏.‏
Reference : Sahih al-Bukhari 5895
In-book reference : Book 77, Hadith 112
USC-MSA web (English) reference : Vol. 7, Book 72, Hadith 783
  (deprecated numbering scheme)