(3) باب النَّحْرِ قَبْلَ الْحَلْقِ فِي الْحَصْرِ
Narrated Nafi`:
That `Abdullah and Salim said to `Abdullah bin `Umar, "(You should not go for Hajj this year)." `Abdullah bin `Umar replied, "We set out with the Prophet (to Mecca for performing `Umra) and the infidels of Quraish prevented us from reaching the Ka`ba. Allah's Messenger (ﷺ) slaughtered his Budn (camels for sacrifice) and got his head shaved."
Reference: Sahih al-Bukhari 1812
In-book reference: Book 27, Hadith 7
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 28, Hadith 39