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 4841

Narrated `Uqba bin Sahban:

`Abdullah bin Mughaffal Al-Muzani who was one of those who witnessed (the event of) the tree, said, "The Prophet (ﷺ) forbade the throwing of small stones (with two fingers)."

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا شَبَابَةُ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، قَالَ سَمِعْتُ عُقْبَةَ بْنَ صُهْبَانَ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ الْمُزَنِيِّ، إِنِّي مِمَّنْ شَهِدَ الشَّجَرَةَ، نَهَى النَّبِيُّ صلى الله عليه وسلم عَنِ الْخَذْفِ‏.‏
Reference : Sahih al-Bukhari 4841
In-book reference : Book 65, Hadith 362
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 365
  (deprecated numbering scheme)