۞وَلَا تُجَٰدِلُوٓاْ أَهۡلَ ٱلۡكِتَٰبِ إِلَّا بِٱلَّتِي هِيَ أَحۡسَنُ إِلَّا ٱلَّذِينَ ظَلَمُواْ مِنۡهُمۡۖ وَقُولُوٓاْ ءَامَنَّا بِٱلَّذِيٓ أُنزِلَ إِلَيۡنَا وَأُنزِلَ إِلَيۡكُمۡ وَإِلَٰهُنَا وَإِلَٰهُكُمۡ وَٰحِدٞ وَنَحۡنُ لَهُۥ مُسۡلِمُونَ
And argue not with the people of the Scripture (Jews and Christians), unless it be in (a way) that is better (with good words and in good manner, inviting them to Islamic Monotheism with His Verses), except with such of them as do wrong, and say (to them): "We believe in that which has been revealed to us and revealed to you; our Ilah (God) and your Ilah (God) is One (i.e. Allah), and to Him we have submitted (as Muslims)."
وَكَذَٰلِكَ أَنزَلۡنَآ إِلَيۡكَ ٱلۡكِتَٰبَۚ فَٱلَّذِينَ ءَاتَيۡنَٰهُمُ ٱلۡكِتَٰبَ يُؤۡمِنُونَ بِهِۦۖ وَمِنۡ هَـٰٓؤُلَآءِ مَن يُؤۡمِنُ بِهِۦۚ وَمَا يَجۡحَدُ بِـَٔايَٰتِنَآ إِلَّا ٱلۡكَٰفِرُونَ
And thus We have sent down the Book (i.e. this Quran) to you (O Muhammad SAW), and those whom We gave the Scripture [the Taurat (Torah) and the Injeel (Gospel) aforetime] believe therein as also do some of these (who are present with you now like 'Abdullah bin Salam) and none but the disbelievers reject Our Ayat [(proofs, signs, verses, lessons, etc., and deny Our Oneness of Lordship and Our Oneness of worship and Our Oneness of Our Names and Qualities: i.e. Islamic Monotheism)].
وَمَا كُنتَ تَتۡلُواْ مِن قَبۡلِهِۦ مِن كِتَٰبٖ وَلَا تَخُطُّهُۥ بِيَمِينِكَۖ إِذٗا لَّٱرۡتَابَ ٱلۡمُبۡطِلُونَ
Neither did you (O Muhammad SAW) read any book before it (this Quran), nor did you write any book (whatsoever) with your right hand. In that case, indeed, the followers of falsehood might have doubted.