Sunan an-Nasa'i, Hadith 5062 ⓘ
Al-Bara' said: "I have never seen any man more handsome in a red Hullah than the Messenger of Allah [SAW]." He said: "And I saw his long hair, coming almost to his shoulders."
أَخْبَرَنَا عَبْدُ الْحَمِيدِ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا مَخْلَدٌ، قَالَ حَدَّثَنَا يُونُسُ بْنُ أَبِي إِسْحَاقَ، عَنْ أَبِيهِ، قَالَ حَدَّثَنِي الْبَرَاءُ، قَالَ مَا رَأَيْتُ رَجُلاً أَحْسَنَ فِي حُلَّةٍ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم . قَالَ وَرَأَيْتُ لَهُ لِمَّةً تَضْرِبُ قَرِيبًا مِنْ مَنْكِبَيْهِ .
also referenced under: Book 48, Hadith 23 (In-Book) & Volume 6, Book 48, Hadith 5065 (DarusSalam)