Abdullah bin Abu Awfa reported,

Those present at the Tree numbered one thousand three hundred, and the tribe of Aslam made up an eighth of the Emigrants.

Muslim 4816

Sahih

و حدثنا ابن المثنى حدثنا أبو داود ح و حدثناه إسحق بن إبراهيم أخبرنا النضر بن شميل جميعا عن شعبة بهذا الإسناد مثله

مسلم 4816صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Leadership
Chapter
Recommendation of pledging allegiance to the commander of the army when intending to fight, and description of the pledge of Ridwan under the tree
Numbering
Darussalam 4816
Muslim 4816