Palestine is a big thing for Muslims, and the British Mandate of Palestine wasn't legal till Sir Herbert Samuel took his oath of office, obviously that was on 11th September!
Please scroll down link provided and click on blue arrow by the side of year 1922. This gives documents relating to months, being 12, 8, 7, and 6. Please click on blue arrow 12.
This will lead to two documents, please click on "Mandate for Palestine-Report of the Mandatory to LoN-UK