The Book of Adornment
48/59. Chapter:
Wearing One's Hair Long
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ مَعْمَرٍ، قَالَ حَدَّثَنَا حَبَّانُ، قَالَ حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَضْرِبُ شَعْرُهُ إِلَى مَنْكِبَيْهِ .
It was narrated from Anas that: The hair of the Prophet [SAW] came down to his shoulders.
Reference : Sunan an-Nasa'i 5235In-book reference : Book 48, Hadith 196English translation : Vol. 6, Book 48, Hadith 5237