Is there other legend/folklore/descriptions about the djinn beyond the Koran and the 1001 nights? Not saying the Koran is folklore, but I am saying that I consider the Koran just as canonical on djinn as I consider the Bible canonical on unicorns.
I feel compelled to mention that the Middle Eastern concept of djinni, and the Roman idea of the (personal) genius seem to have been conflated at some point, which has resulted in the West’s notably different conception of a “genie.”
This from Wikipedia:
In ancient Rome, the genius (plural in Latin genii) was the guiding spirit or tutelary deity of a person, family (gens), or place (genius loci). The noun is related to the Latin verb genui, genitus, “to bring into being, create, produce”. Because the achievements of exceptional individuals seemed to indicate the presence of a particularly powerful genius, by the time of Augustus the word began to acquire its secondary meaning of “inspiration, talent.”
I think you’re thinking about this in the wrong way.
The Koran reflects medieval Arabic notions of what djinn are, but the cultural authority of the Koran of the Koran is so huge that it has influenced the folk conceptions of djinn for the last 1000+ years. There are loads of other stories involving djinn along the lines of the Arabian Nights, but by definition there isn’t going to be anything authoritative across the various Arabic cultures other than the Koran.
It is more comparable to the authority of the Bible on angels: there’s a lot of folklore on angels that goes beyond the Bible and occasionally contradicts it, but you can’t ignore what the Bible says if you want to understand the concept in the folklore of Christian countries.