Sayyiduna Abdullah bin Abi Awfa رضي الله عنه narrates: On the day of the tree (i.e., the day of the Pledge of Ridwan), we were one thousand three hundred individuals. On that day, the people belonging to the tribe of Aslam were equal to one-eighth of the Muhajirun (in number). May Allah have mercy on them.
Hadith Referenceصحیح ابن حبان / كتاب السير / 4803
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح: خ (4155) تعليقاً.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين