Virtues and Merits of the Prophet (pbuh) and his Companions
Bukhari :: Book 4 :: Volume 56 :: Hadith 668
Narrated Abu Huraira:
Allah's Apostle said, "The Jews and the Christians do not dye (their grey hair), so you shall do the opposite of what they do (i.e. dye your grey hair and beards)."
Source materials are from the University of Southern California MSA site|
Hadith eBooks converted from Imaan Star