٩٤. فَإِن كُنتَ فِى شَكٍّ مِّمَّآ أَنزَلْنَآ إِلَيْكَ فَسْـَٔلِ ٱلَّذِينَ يَقْرَءُونَ ٱلْكِتَـٰبَ مِن قَبْلِكَ ۚ لَقَدْ جَآءَكَ ٱلْحَقُّ مِن رَّبِّكَ فَلَا تَكُونَنَّ مِنَ ٱلْمُمْتَرِينَ
٩٥. وَلَا تَكُونَنَّ مِنَ ٱلَّذِينَ كَذَّبُوا۟ بِـَٔايَـٰتِ ٱللَّهِ فَتَكُونَ مِنَ ٱلْخَـٰسِرِينَ
[94-95] If you are in doubt regarding the Guidance We have sent down to you, you may inquire about this from those people who have been reading the Scriptures before you. In fact, it is the very Truth that has come to you from your Lord; so be not of those who doubt and join not those who treat Allah's Revelations as false; otherwise you shall be of the losers.96
96Though these words were addressed to the Holy Prophet, they were meant for those who expressed doubts about his Message. As regards the reference to the people of the Book, it is because they possessed the Knowledge of the Scriptures, whereas the common people of Arabia lacked this, and were, therefore, strangers to the voice of the Quran. It was also expected that their just and pious scholars would testify that its Message was the same as that of the Scriptures of the former Prophets.