(Qalb). The human heart is the place of constant change and fluctuation. It is the supra-rational organ of intuition where the Transcendent Realities enter into contact with man. The heart is the isthmus between this world and the next. The battlefield of the Greater Holy War is the heart. This is where the downward-pulling lower self is confronted by the yearning spirit. The battle is fought between these two adversaries in order for one to take possession of the precious heart of man. Under the misguidance of the Misguider, the lower self wants the heart to plummet to the depths of ignorance. However, the spirit, which is from Allah, exerts a powerful attraction upon the heart, as it endeavours to guide it towards Knowledge of Allah. The greater the purification of the heart the more receptive it is to this irresistible attraction of the celestial spirit. The heart is the sanctified centre of man because it is the place which contains Allah. Keeping watch over the heart is part of the spiritual struggle of the Journey of Return. Those well-advanced along the Path never allow any intruders to enter their sanctified hearts. The heart of the Perfect Man is the Divine Throne around which circle the spiritual realities.
(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.
(Dhikrullah). Invocation of Allah through one of His Names or through His Words. The perfect dhikrullah, in which Allah becomes the seeing, the hearing, the speaking, the grasping of the one who remembers, is attained when every atom of the dhakir's being is absorbed and annihilated in the Remembrance of Allah. The dhakir becomes internally unified with the Absolute. Only then does Allah sit totally with the one who remembers Allah.