Evidence for the Fact that the Qur'an was revealed from Allah

Ibn Jarir said: "Allah says, `just as We revealed the Books to the Messengers who came before you, O Muhammad, so We have also revealed this Book to you."' What he said is good and fits the context. Allah's saying:

فَالَّذِينَ ءَاتَيْنَـهُمُ الْكِتَـبَ يُؤْمِنُونَ بِهِ

The status of the narrations of the People of the Book quoted by the commentators in their commentaries is also the same. The object of their reproduction in the commentaries is meant to highlight their historical position. They cannot be used for determining what is permitted (halal) and what is not permitted حَرَام (haram).

مَا كُنتَ تَتْلُو مِن قَبْلِهِ مِن كِتَابٍ وَلَا تَخُطُّهُ بِيَمِينِكَ إِذًا لَّارْ‌تَابَ الْمُبْطِلُونَ (And you have never been reciting any book before this, nor have you been writing it with your right hand, had it been so, the people of falsehood would have raised doubts. - 29:48). That is Before the revelation of the Qur'an you could neither read nor write, rather you were unlettered (اُمِّی). If it was not so, and you were literate, then there could have been a possibility of doubt for the infidels to put the blame that you were repeating what you had read in, the earlier books, Torah and Injil, and it was not a new revelation sent down on you by way of prophethood.'