The tree from which the oil is kindled is the Essence itself, which can neither be bounded nor described."

And the Sheikh Hatim said in the "Book of Absolute Detachment" [Kitab al-Tajrid]: "As for that which resembles manifestation and absence, it is like the flashing lightning: it is seen, yet it cannot be grasped. This is the Unseen and the magnificent, dazzling Power made manifest through outward expression and inward concealment."

And the Sheikh Yaqub al-Hasan said in his book "The Memorial of Spiritual Life" [Tadhkirat al-Hayat al-Ruhiyyah]: "And indeed, Ali is a locus of manifestation among the loci of the Divine Power; the absolute Essence of Allah transcends far above being restricted by the conditioning of a form."

Ibn Makzun said: "Just as He inspired the intellects to know Him without fully comprehending Him, He likewise granted the eyes to behold Him without achieving a sensory comprehension of the vision."