Sahih Muslim, 6076

Thabit reported that Anas b. Malik was asked about the dyeing (of the hair of) Allah's Apostle (ﷺ). Thereupon he said.:(They were so few) that if I so liked I could count their number in his head, and he further said: (That is) he did not dye. Abu Bakr, however, dyed them and so did 'Umar dye them with pure henna

Rapporté par Thabit : « Anas ibn Malik رضي الله عنه a été interrogé au sujet de la teinture des cheveux du Messager d’Allah ﷺ. Il a dit : “Ils étaient si peu nombreux que je pourrais les compter sur sa tête si je voulais.” Il a ajouté : “Il ne se teignait pas les cheveux. Mais Abu Bakr et Omar les teignaient avec du henné pur.” »