(35) باب غَزْوَةِ الْحُدَيْبِيَةِ
Narrated Suwaid bin An-Nu`man:
who was one of those who witnessed (the Pledge of allegiance beneath) the Tree: Allah's Messenger (ﷺ) and his companions were given Sawiq and they chewed it.
Reference: Sahih al-Bukhari 4175
In-book reference: Book 64, Hadith 217
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 59, Hadith 492