Jabir bin Abdullah reported,

On the day of Hudaybiyyah we numbered fourteen hundred. We gave him our pledge while Umar held his hand beneath the tree, which was a samura tree. He said, "We pledged to him that we would not flee, but we did not pledge to him unto death."

Muslim 4807

Sahih

حدثنا قتيبة بن سعيد حدثنا ليث بن سعد ح و حدثنا محمد بن رمح أخبرنا الليث عن أبي الزبير

عن جابر قال

كنا يوم الحديبية ألفا وأربع مائة فبايعناه وعمر آخذ بيده تحت الشجرة وهي سمرة وقال بايعناه على أن لا نفر ولم نبايعه على الموت

مسلم 4807صحيح
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 4807
Muslim 4807