Anas b. Malik transmitted it from the Messenger of Allah (ﷺ) that the Great and Glorious Allah said
Verily your people would constantly question about this and that till they would say : Well , it is Allah Who created the creation , but who created Allah ? This hadith has been narrated by another chain of transmitters with the exception that Ishaq made no mention of this : Allah said : Verily your people.