1981Abu DawoodSahih (Al-Albani)حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا يَعْقُوبُ، - يَعْنِي الإِسْكَنْدَرَانِيَّ - عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم حَلَقَ رَأْسَهُ فِي حَجَّةِ الْوَدَاعِ .Narrated Ibn 'Umar:The Messenger of Allah (ﷺ) had his head shaved at the Farewell Pilgrimage.Reference: Sunan Abi Dawud 1980 In-book : Book 11, Hadith 260 English translation : Book 10, Hadith 1975