question #3 Sahih al-Bukhari 4155, Book 64, Hadith 199 : Who were the Emigrants, and what role did they play in early Islamic history?

`Abdullah bin Abi `Aufa
said, “The people (who gave the Pledge of allegiance) under the Tree numbered 1300 and the number of Bani Aslam was 1/8 of the Emigrants.”