It wasnarrated from Abu Dharr that the Messenger of Allah (ﷺ)said:
"Thebest things with which you change gray hair are henna andKatam."* (JA)
English reference (JA): Vol. 4, Book 32, Hadith 3622 (JA)
Arabic reference (JA): Book 32, Hadith 3753 (JA)