Sahih al-Bukhari 4187
صحيح البخاري#4187SahihAbdullah bin `Umar added:"The people were along with the Prophet (ﷺ) on the day of Al-Hudaibiya spreading in the shade of the trees. Suddenly the people surrounded the Prophet (ﷺ) and started looking at him." `Umar said, "O `Abdullah! Go and see why the people are encircling Allah's Apostle and looking at him." `Abdullah bin `Umar then saw the people giving the Pledge of allegiance to the Prophet. So he also gave the Pledge of allegiance and returned to `Umar who went out in his turn and gave the Pledge of allegiance to the Prophet
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 64:227