(18) باب فِي الْخِضَابِ
Thabit said that Anas was asked about the hair-dye of the Prophet (ﷺ). He replied:
He did not dye his hair, but Abu Bakr and 'Umar dyed their hair. (ES)
Reference (ES): Sunan Abi Dawud 4209 (ES)
In-book reference (ES): Book 35, Hadith 51 (ES)
English translation (ES): Book 34, Hadith 4197 (ES)