(18) باب فِي الْخِضَابِ
Narrated Abu Hurairah:
The Prophet (ﷺ) as saying: Jews and Christians do not dye (their beards), so act differently from them.
Reference: Sunan Abi Dawud 4203
In-book reference: Book 35, Hadith 45
English translation: Book 34, Hadith 4191