The Islamic "lafif" was a body of twelve members drawn from the neighbourhood and sworn to tell the truth, who were bound to give a unanimous verdict, about matters "which they had personally seen or heard, binding on the judge, to settle the truth concerning facts in a case, between ordinary people, and obtained as of right by the plaintiff." The only characteristic of the English jury which the Islamic "lafif" lacked was the "judicial writ directing the jury to be summoned and directing the bailiff to hear its recognition." According to Professor John Makdisi, "no other institution in any legal institution studied to date shares all of these characteristics with the English jury." It is thus likely that the concept of the "lafif" may have been introduced to England by the Normans, who conquered both England and the Emirate of Sicily, and then evolved into the modern English jury.