Watt, W. Montgomery. Muhammad at Medina. Oxford University Press, 1956 — 33-bet. ISBN 978-0195773071. „The common version, however, is that B. Lihyan wanted to avenge the assassination of their chief at Muhammad's instigation, and bribed two clans of the tribe of Khuzaymah to say they wanted to become Muslims and ask Muhammad to send instructors.“ (online)
Watt, W. Montgomery. Muhammad at Medina. Oxford University Press, 1956 — 33-bet. ISBN 978-0-19-577307-1. „The common version, however, is that B. Lihyan wanted to avenge the assassination of their chief at Muhammad's instigation, and bribed two clans of the tribe of Khuzaymah to say they wanted to become Muslims and ask Muhammad to send instructors.“ (online)