‏الفضائل : Hadeeth No:5779 Ibn Sirin reported: Anas b. Malik was asked whether Allaah's Messenger (sallAllaahu alayhi wa sallam) dyed his hair. He said: He had not become old enough to have white hair. Ibn Idris said that he had a few white hair. Abu Bakr and Umar, however, dyed hair with hina' (henna)....

‏الحج : Hadeeth No:3138 Ibn Juraij narrated this hadith with the same chain of transmitters....