Sahih al-Bukhari, Hadith 1729 ⓘ
Narrated `Abdullah: The Prophet and some of his companions got their heads shaved and some others got their hair cut short.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ بْنِ أَسْمَاءَ، حَدَّثَنَا جُوَيْرِيَةُ بْنُ أَسْمَاءَ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ، قَالَ حَلَقَ النَّبِيُّ صلى الله عليه وسلم وَطَائِفَةٌ مِنْ أَصْحَابِهِ، وَقَصَّرَ بَعْضُهُمْ.
also referenced under: Book 25, Hadith 207 (In-Book) & Volume 2, Book 26, Hadith 787 (USC-MSA)