أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا أَبُو دَاوُدَ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ سِمَاكٍ، قَالَ سَمِعْتُ جَابِرَ بْنَ سَمُرَةَ، سُئِلَ عَنْ شَيْبِ، رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ كَانَ إِذَا ادُّهِنَ رَأْسُهُ لَمْ يُرَ مِنْهُ وَإِذَا لَمْ يُدَّهَنْ رُئِيَ مِنْهُ .
It was narrated that Simak said: "I heard Jabir bin Samurah being asked about the gray hairs of the Prophet [SAW]. He said: 'If he put oil on his head they could not be seen, but if he did not put oil on his head, they could be seen.'" Translation Not Available
Book Ref: Sunan An Nisai Book 48 Hadith 5114
Web Ref: Sunan An Nisai Vol 6 Book 48 Hadith 5117