In the Middle Ages varying customs emerged of reciting the first paragraph every day, at the end of either the morning service alone or of all the prayer services for the day. In the 16th century the kabbalist Hayim Vital, recording the opinions of Isaac Luria, ruled that both paragraphs should be included in all services, and should end with the verse "on that day the Lord shall be one and His Name one". This has been accepted in almost all communities except for the Spanish and Portuguese Jews, who retain the "short Alenu". The custom according to some North African prayer books is to recite the second paragraph only at the conclusion of weekday morning services.