The Prophet said: "The best things with which you can change gray hair are Henna and Katam."
Sunan an-Nasa'i Book 48, Hadith 38
← Previous Hadith "Abu Quhafah was brought on the Day of the Conquest of Makkah, and his hair and beard were white like the Thaghamah. The Messenger of Allah said: 'Change this with something, but avoid black.'"

Sunan an-Nasa'i Book 48, Hadith 37 Next Hadith → "The Messenger of Allah said: 'The best things with which you can change gray hair are Henna and Katam.'"

Sunan an-Nasa'i Book 48, Hadith 39