Sahih Muslim 329
Jabir b. 'Abdullah reported:
When the Messenger of Allah (ﷺ) took a bath because of sexual intercourse, he poured three handfuls of water upon his head. Hasan b. Muhammad said to him (the narrator): My hair is thick. Upon this Jabir observed. I said to him: O son of my brother, the hair of the Messenger of Allah (ﷺ) was thicker than your hair and these were more fine (than yours).
وَحَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الْوَهَّابِ، - يَعْنِي الثَّقَفِيَّ - حَدَّثَنَا جَعْفَرٌ، عَنْ أَبِيهِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا اغْتَسَلَ مِنْ جَنَابَةٍ صَبَّ عَلَى رَأْسِهِ ثَلاَثَ حَفَنَاتٍ مِنْ مَاءٍ ‏.‏ فَقَالَ لَهُ الْحَسَنُ بْنُ مُحَمَّدٍ إِنَّ شَعْرِي كَثِيرٌ ‏.‏ قَالَ جَابِرٌ فَقُلْتُ لَهُ يَا ابْنَ أَخِي كَانَ شَعْرُ رَسُولِ اللَّهِ صلى الله عليه وسلم أَكْثَرَ مِنْ شَعْرِكَ وَأَطْيَبَ ‏.‏