And his saying [in the Adhan]:
"I testify that the Unique (Al-Ahad) is the Restorer of the Occultation of Eternity."
He means by it the Eternal Form, and that it is the Singularity of Essence and Reality, guiding to the Tawhid of Eternity.
Then he said:
"And I testify that the One (Al-Wahid) is a Messenger from Him, and an indication upon Him."
He did not separate from Him so as to be a second with Him, nor did he connect to Him [physically] so as to be exactly Him; rather, he is His Supreme Word 1 and His Greatest Sign.
And we have already presented the saying to you in other than this place, clarifying it so that you may know it—if Allah wills.
And the Iqama for the Prayer was made singular (Furada) only for its abstraction from looking at the High Ranks and for wayfaring in the Ranks of the Abstract Lights.