God erases whatever He will and He fixes whatever He will, and with Him is the Mother of the Book.He [Sahl] said:God erases what He wills in the realm of [secondary] causes (asbāb), and fixes what is decreed. And with Him is the Mother of the Book. It is the irrevocable decree (qaḍā) to which nothing may be added and from which nothing may be taken away. His words, Exalted is He: