Found in a publication, "Keys to Jerusalem" of this think-tank:-
That's a history propounded by The Royal Islamic Strategic Studies Centre (RISSC) which is an independent research entity affiliated with the Royal Aal al-Bayt Institute for Islamic Thought. The Royal Aal al-Bayt Institute for Islamic Thought is an international Islamic non-governmental, independent institute headquartered in Amman, the capital of the Hashemite Kingdom of Jordan.
But they have a few problems with history.
See my notations in red.