Translation of the verse 111 from Surah Yusuf : Number of verses 111 - - page 248 - Part 13.
Indeed in their stories, there is a lesson for men of understanding. It (the Quran) is not a forged statement but a confirmation of the Allah's existing Books [the Taurat (Torah), the Injeel (Gospel) and other Scriptures of Allah] and a detailed explanation of everything and a guide and a Mercy for the people who believe.
There was certainly in their stories a lesson for those of understanding. Never was the Qur'an a narration invented, but a confirmation of what was before it and a detailed explanation of all things and guidance and mercy for a people who believe.
(12:111) There is an object lesson in these stories of the former people for those, who possess common sense. That thing which is being sent down in the Qur'an is not a forgery, but (is absolutely genuine and) it confirms the previous Scriptures, gives details *80 of everything, and is a guidance and blessing for the Believers.
*80) That is, "It gives details of everything that is required for the guidance of man. " Some people take "details of everything" to mean the details of everything in the world. So, when they do not find in it the details of mathematics, physics, medicine etc. etc. they become skeptical. Whereas the Qur'an claims to give the details of only one `subject', "Guidance", for which it has been sent down, and it does give the details of everything that is essential for it.
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