The first to come to us were Musab bin Umayr and Ibn Umm Maktum. Then Ammar bin Yasir and Bilal came to us.
أول من قدم علينا مصعب بن عمير، وابن أم مكتوم، ثم قدم علينا عمار بن ياسر، وبلال رضي الله عنهم.
Bukhari narrated it in the Book of Virtues (3924) from Abu Walid, who said, Shubah narrated to us, who said, Abu Ishaq told us, he heard Bara say, and he mentioned it.