This is the realised gnostic ('arif) of Allah, who has been granted idhn (permission and authorisation) by God(Allah), to lead the followers of the path of Sufism to knowledge of Allah. This idhn is not to be confused with ijazah (authorisation) granted by a sheik or a scholar to a student to teach. Even if all of the scholars and sheiks granted their ijazah to a student, he would still not be a sheik of Instruction until he had the idhn of Allah and Muhammad.