The Book of Pilgrimage
15/55. Chapter:
Shaving the head is preferrable to cutting the hair, although cutting the hair is permissible
Sahih Muslim
وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا يَعْقُوبُ، وَهُوَ ابْنُ عَبْدِ الرَّحْمَنِ الْقَارِيُّ ح وَحَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا حَاتِمٌ، - يَعْنِي ابْنَ إِسْمَاعِيلَ - كِلاَهُمَا عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم حَلَقَ رَأْسَهُ فِي حَجَّةِ الْوَدَاعِ .
Ibn Umar reported that Allah's Messenger (ﷺ) got his head shaved on the occasion of the Farewell Pilgrimage.
Reference : Sahih Muslim 1304In-book reference : Book 15, Hadith 355USC-MSA web (English) reference : Book 7, Hadith 2990