كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(5)
The Statement of Allah the Most High: "...When they gave their Bai'a (pledge) to you (O Muḥammad pbuh) under the tree..." (V.48:18)
(5)
Sahih al-Bukhari 4843

Narrated Thabit bin Ad-Dahhak:

who was one of the companions of the tree (those who swore allegiance to the Prophet (ﷺ) beneath the tree at Al-Hudaibiya):

حَدَّثَنِي مُحَمَّدُ بْنُ الْوَلِيدِ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ خَالِدٍ، عَنْ أَبِي قِلاَبَةَ، عَنْ ثَابِتِ بْنِ الضَّحَّاكِ ـ رضى الله عنه ـ وَكَانَ مِنْ أَصْحَابِ الشَّجَرَةِ‏.‏
Reference : Sahih al-Bukhari 4843
In-book reference : Book 65, Hadith 364
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 366
  (deprecated numbering scheme)