Ain Soph Aur (Hebrew AIN SVP AVR, “light without limit, infinite light”) is the first and lowest of the Three Veils of the Unmanifest. The other two Veils are Ain and Ain Soph.
Greer, John Michael. The New Encyclopedia of the Occult. St. Paul. MN. Llewellyn Worldwide. 2005. p. 9