Knowing the fundamental terms of Sufism such as fanaa' (annihilation), baqaa' (subsistence), marifa (gnosis), and the rest, by having actually tread the path under a sheik and understood them at first hand. Exalting the commands of Allah in word and deed, and knowing that it is above every human being. Having permission from Allah and Muhammad - beyond the authorization given to him by his sheik - manifest in his tawfiq or 'success' in inculcating the perfections of Islam, iman and ihsan in his disciples.