It was narrated that Abu Juhaifah said:
“I saw the Messenger of Allah ﷺ, and this part of his hair was white” – meaning the tuft of hair between the lower lip and the chin.

حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا أَبُو دَاوُدَ، حَدَّثَنَا زُهَيْرٌ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي جُحَيْفَةَ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ ﷺ هَذِهِ مِنْهُ بَيْضَاءُ . يَعْنِي عَنْفَقَتَهُ .