﴿ قُلْ يَٰٓأَهْلَ ٱلْكِتَٰبِ لَسْتُمْ عَلَىٰ شَىْءٍ حَتَّىٰ تُقِيمُوا۟ ٱلتَّوْرَىٰةَ وَٱلْإِنجِيلَ وَمَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُمْ ۗ وَلَيَزِيدَنَّ كَثِيرًۭا مِّنْهُم مَّآ أُنزِلَ إِلَيْكَ مِن رَّبِّكَ طُغْيَٰنًۭا وَكُفْرًۭا ۖ فَلَا تَأْسَ عَلَى ٱلْقَوْمِ ٱلْكَٰفِرِينَ ﴾

“Say: "O followers of the Bible! You have no valid ground for your beliefs -unless you [truly] observe the Torah and the Gospel, and all that has been bestowed from on high upon you by your Sustainer!" Yet all that has been bestowed from on high upon thee [O Prophet] by thy Sustainer is bound to make many of them yet more stubborn in their overweening arrogance and in their denial of the truth. But sorrow not over people who deny the truth:”

Say ‘O People of the Scripture you have no basis in religion on which to rely until you observe the Torah and the Gospel and what was revealed to you from your Lord’ by implementing what is therein including believing in me Muhammad (s). And what has been revealed to you from your Lord of the Qur’ān will surely increase many of them in insolence and disbelief because of their disbelief in it; so do not grieve for the disbelieving folk if they do not believe in you in other words do not be concerned with them.