Most holy books of different religions are authored and written by individuals with their own words and phrases. Since Hadith books were collected by Muslim scholars and contained Muhammad’s own sayings and teachings, many researchers consider holy books.
For example, the Bible was written over a period of 1400 to 1800 years by 40 different authors. It is a compilation of 66 separate books, divided into two primary divisions: the Old Testament (containing 39 books) and the New Testament (containing 27 books)
It is to be noted that the reference of God to Himself as" We" in many verses in the Quran is necessarily understood in the Arabic language to denote grandeur and power. In the English language this is known as the Royal We, where a plural pronoun is used to refer to a single person. On the other hand, the Qura'n frequently uses the word "say" which means " Say to them O Muhammad."