سنن ابن ماجه

It was narrated from Sa’eed bin Abu Sa’eed that ‘Ubaid bin Juraij asked Ibn ‘Umar: “I see that you dye your beard yellow with Wars.” Ibn ‘Umar said: “As for my dyeing of my beard yellow with Wars, I saw the Messenger of Allah (ﷺ) dyeing his beard yellow.”