Hadith 5086
أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا أَبُو دَاوُدَ، قَالَ حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّهُ سَأَلَهُ هَلْ خَضَبَ رَسُولُ اللَّهِ صلى الله عليه وسلم قَالَ لَمْ يَبْلُغْ ذَلِكَ إِنَّمَا كَانَ شَىْءٌ فِي صُدْغَيْهِ .
It was narrated from Qatadah :That he asked Anas: "Did the Messenger of Allah [SAW] dye his hair? He said: "His gray hair didn't go far, it was only a little at his temples
Sahih (Abu Ghuddah)
Sunan an-Nasaʾi 5086 · Book 48, Hadith 47