Sahih al-Bukhari, Volume 5, Book 59, Hadith 695 (USC-MSA) ⓘ
Narrated Ibn `Umar: During Hajjat-ul-Wada`, the Prophet and some of his companions got their heads shaved while some of his companions got their head-hair cut short.
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، حَدَّثَنَا مُحَمَّدُ بْنُ بَكْرٍ، حَدَّثَنَا ابْنُ جُرَيْجٍ، أَخْبَرَنِي مُوسَى بْنُ عُقْبَةَ، عَنْ نَافِعٍ، أَخْبَرَهُ ابْنُ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم حَلَقَ فِي حَجَّةِ الْوَدَاعِ وَأُنَاسٌ مِنْ أَصْحَابِهِ وَقَصَّرَ بَعْضُهُمْ.
also referenced under: Book 64, Hadith 433 (In-Book) & Hadith 4411 (DarusSalam)