Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: When the Prophet (peace and blessings be upon him) arrived in Madinah, among his companions, Sayyiduna Abu Bakr (may Allah be pleased with him) was the eldest. He used to dye his hair with a mixture of henna and katam (a type of herb) until (the color of his hair) became black. The narrator says: The next time I went to him, I said: (In the narration, these words are:) The color was close to black, so (the teacher narrator) said: I did not say: black.
Hadith Referenceصحیح ابن حبان / كتاب الزينة والتطييب / 5469
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح: خ (3920) تعليقا.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الصحيح