" ... he will then pass from this city into the City of Absolute Nothingness ..."

"And should the servant ascend to even loftier heights, quit this mortal world of dust, and seek to ascend unto the celestial abode, he will then pass from this city into the City of Absolute Nothingness, that is, of dying to self and living in God. In this station, this most exalted habitation, this journey of utter self-effacement, the wayfarer forgetteth his soul, spirit, body, and very being, immerseth himself in the sea of nothingness, and liveth on earth as one unworthy of mention. Nor will one find any sign of his existence, for he hath vanished from the realm of the visible and attained unto the heights of self-abnegation.

Were We to recount the mysteries of this city, the dominions of the hearts of men would be laid to waste in the intensity of their longing for this mighty station. For this is the station wherein the effulgent glories of the Beloved are revealed to the sincere lover and the resplendent lights of the Friend are cast upon the severed heart that is devoted to Him."

-Bahá'u'lláh, Gems of Divine Mysteries (Javáhiru’l-Asrár), p. 70