كتاب المناسك
10  
The Rites of Pilgrimage
(9a)
Chapter: Shaving - Section 1
(8)
باب الحلق - الفصل الأول
Mishkat al-Masabih 2646
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.
عَنِ ابْنِ عُمَرَ: أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ حَلَقَ رَأْسَهُ فِي حَجَّةِ الْوَدَاعِ وَأُنَاسٌ مِنْ أَصْحَابِهِ وَقَصَّرَ بَعْضُهُمْ
  مُتَّفق عَلَيْهِ   (الألباني) حكم   :
Reference : Mishkat al-Masabih 2646
In-book reference : Book 10, Hadith 137