Hadith 2646
Mishkat al-Masabih
The Rites of Pilgrimage · Shaving - Section 1
Arabic
عَنِ ابْنِ عُمَرَ: أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ حَلَقَ رَأْسَهُ فِي حَجَّةِ الْوَدَاعِ وَأُنَاسٌ مِنْ أَصْحَابِهِ وَقَصَّرَ بَعْضُهُمْ
English translation
Ibn ‘Umar said that God’s messenger had his head shaved at the Farewell Pilgrimage, as did some of his companions, but some had their hair clipped. Bukhari and Muslim.