It describes the revelation to Muhammad as being dictated by the angel Jabril, not by Allah himself, and Muhammad as a messenger of Allah. While the Quran descends, in the Quran Allah himself is never described as coming down, but is sometimes mentioned in hadith as going from higher to lower heavens.
The Quran states that the revelation was given by the angel Jabril, not directly by Allah himself. Muhammad is presented as a messenger of Allah. The Quran itself does not describe Allah descending, but some hadiths mention Allah moving between different levels of heaven.