Sunan an-Nasa'i 5053

سنن النسائي#5053Sahih

أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ، قَالَ حَدَّثَنَا أَبِي قَالَ، سَمِعْتُ قَتَادَةَ، يُحَدِّثُ عَنْ أَنَسٍ، قَالَ كَانَ شَعْرُ النَّبِيِّ صلى الله عليه وسلم شَعْرًا رَجِلاً لَيْسَ بِالْجَعْدِ وَلاَ بِالسَّبْطِ بَيْنَ أُذُنَيْهِ وَعَاتِقِهِ ‏.‏

It was narrated that Anas said:"The hair of the Prophet [SAW] was wavy, neither curly nor straight, and (hung down) between his ears and his shoulders

Scholarly Authentication

The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:

Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon

In-book reference: 48:14