(Safa). The higher teaching is Purity. The word Sufi derives from safa. The Sufi is the slave of Allah whose self, heart, spirit and secret have been purified, through the Remembrance of Allah, through sincere spiritual endeavour and ultimately by Allah's Grace. His heart has become the dwelling place of Allah. He is the perfect locus of manifestation for the All-Comprehensive Name 'Allah'. An indication to the purification of the self from the human qualities.