Riyad as-Salihin, Book 18, Hadith 1637 (In-Book) ⓘ

Jabir (May Allah be pleased with him) said: Abu Quhafah, father of Abu Bakr (May Allah be pleased with them) was presented to the Messenger of Allah on the day of the conquest of Makkah and his head and beard were snow white. The Messenger of Allah said, "Change it (i.e., dye it and avoid black colour)."[Muslim].

عن جابر رضي الله عنه قال‏:‏ أتي بأبي قحافة والد أبي بكر الصديق رضي الله عنهما يوم فتح مكة ورأسه ولحيته كالثغامة بياضًا، فقال رسول الله صلى الله عليه وسلم ‏:‏ ‏ "‏غيروا هذا واجتنبوا السواد‏" ‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏