Sunan an-Nasa'i, Volume 6, Book 48, Hadith 5316 (DarusSalam) ⓘ
It was narrated that Al-Bara' said: "I saw the Prophet [SAW] wearing a red Hullah, with his hair combed, and I have never seen anyone before or since, who was more handsome than he."
أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا هُشَيْمٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ، قَالَ رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم وَعَلَيْهِ حُلَّةٌ حَمْرَاءُ مُتَرَجِّلاً لَمْ أَرَ قَبْلَهُ وَلاَ بَعْدَهُ أَحَدًا هُوَ أَجْمَلُ مِنْهُ .
also referenced under: Hadith 5314 (Reference) & Book 48, Hadith 275 (In-Book)