11:17
أَفَمَن كَانَ عَلَىٰ بَيِّنَةٍۢ مِّن رَّبِّهِۦ وَيَتْلُوهُ شَاهِدٌۭ مِّنْهُ وَمِن قَبْلِهِۦ كِتَٰبُ مُوسَىٰٓ إِمَامًۭا وَرَحْمَةً ۚ أُو۟لَٰٓئِكَ يُؤْمِنُونَ بِهِۦ ۚ وَمَن يَكْفُرْ بِهِۦ مِنَ ٱلْأَحْزَابِ فَٱلنَّارُ مَوْعِدُهُۥ ۚ فَلَا تَكُ فِى مِرْيَةٍۢ مِّنْهُ ۚ إِنَّهُ ٱلْحَقُّ مِن رَّبِّكَ وَلَٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يُؤْمِنُونَ
So is one who [stands] upon a clear evidence from his Lord [like the aforementioned]? And a witness from Him follows it, and before it was the Scripture of Moses to lead and as mercy. Those [believers in the former revelations] believe in the Qur'an. But whoever disbelieves in it from the [various] factions - the Fire is his promised destination. So be not in doubt about it. Indeed, it is the truth from your Lord, but most of the people do not believe.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The One Who believes in the Qur'an is upon Clear Proof from His Lord
Allah, the Exalted, informs of the condition of the believers who are upon the natural religion of Allah, which He made inherent in His creatures. This is based upon their confession to Him that there is none worthy of worship except He. This is similar to Allah's statement,
فَأَقِمْ وَجْهَكَ لِلدِّينِ حَنِيفاً فِطْرَةَ اللَّهِ الَّتِى فَطَرَ النَّاسَ عَلَيْهَا
(So set you your face towards the religion, Hanifan. Allah's Fitrah with which He has created mankind.) 30:30, In the Two Sahihs it is recorded that Abu Hurayrah said that the Messenger of Allah said,
«كُلُّ مَوْلُودٍ يُولَدُ عَلَى الْفِطْرَةِ فَأَبَوَاهُ يُهَوِّدَانِهِ أَوْ يُنَصِّرَانِهِ أَوْ يُمَجِّسَانِهِ كَمَا تُولَدُ الْبَهِيمَةُ بَهِيمَةً جَمْعَاءَ هَلْ تُحِسُّونَ فِيهَا مِنْ جَدْعَاءَ؟»
(Every child is born upon the Fitrah, but his parents make him a Jew, Christian, or Magian. This is just as the calf that is born whole. Have you noticed any calves that are born mutilated) In Sahih Muslim it is recorded that `Iyad bin Himar said that the Messenger of Allah said,