(Ma'qul). Intelligible, logical, reasonable, explainable. That which is conceived by the reason ('aql). On the Journey of Return the traveller reaches a point which is indicated by the name 'The Lote Tree of the Uttermost Boundary' where there is no longer anything that he could refer to as intelligible (ma'qul). Reason (al 'aql) and all things which can be conceived by it (ma'qul) must be left behind if the slave is amongst the chosen ones who are destined to be taken to the Divine Presence.