(Hebrew אין) The first aspect of the primordial Absolute or Emptiness.
"AIN is the same as SAT in Sanskrit, in other words, the Unmanifested Absolute." - Samael Aun Weor, Tarot and Kabbalah
"The Thirteenth Aeon, which is beyond the Twelve Gates, is Ain, Sat, the Unmanifested One. Knocking on the Thirteenth Gate is equivalent to entering the bosom of the Cosmic Common Eternal Father, whose Hebraic name is Aelohim." - Samael Aun Weor, The Pistis Sophia Unveiled