حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، قَالَ: حَدَّثَنَا سُرَيْجُ بْنُ النُّعْمَانِ، قَالَ: حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ سِمَاكِ بْنِ حَرْبٍ
قَالَ: قِيلَ لِجَابِرِ بْنِ سَمُرَةَ: أَكَانَ فِي رَأْسِ رَسُولِ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ شَيْبٌ؟ قَالَ: لَمْ يَكُنْ فِي رَأْسِ رَسُولِ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، شَيْبٌ إِلا شَعَرَاتٌ فِي مَفْرِقِ رَأْسِهِ، إِذَا ادَّهَنَ وَارَاهُنَّ الدُّهْنُ
“Was there any grayness of the head of the Messenger of Allah (sallallahu alayhi wa sallam)?” He replied: “There was no grayness on the head of the Messenger of Allah (sallallahu alayhi wa sallam), except some hairs in the part of his hair when he applied oil and the oil made them visible.”
Ash-Shama'il 43, Book 5, Appearing Of The White Hair Of Rasoolullah, Hadith 8. 1 min read