17:107
قُلْ ءَامِنُوا۟ بِهِۦٓ أَوْ لَا تُؤْمِنُوٓا۟ ۚ إِنَّ ٱلَّذِينَ أُوتُوا۟ ٱلْعِلْمَ مِن قَبْلِهِۦٓ إِذَا يُتْلَىٰ عَلَيْهِمْ يَخِرُّونَ لِلْأَذْقَانِ سُجَّدًا
Say, "Believe in it or do not believe. Indeed, those who were given knowledge before it - when it is recited to them, they fall upon their faces in prostration,
Context in Surah Al-Isra
Nearby ayahs help place verse 17:107 in sequence and meaning.
وَبِٱلْحَقِّ أَنزَلْنَـٰهُ وَبِٱلْحَقِّ نَزَلَ ۗ وَمَآ أَرْسَلْنَـٰكَ إِلَّا مُبَشِّرًا وَنَذِيرًا
And with the truth We have sent the Qur'an down, and with the truth it has descended. And We have not sent you, [O Muhammad], except as a bringer of good tidings and a warner.
وَقُرْءَانًا فَرَقْنَـٰهُ لِتَقْرَأَهُۥ عَلَى ٱلنَّاسِ عَلَىٰ مُكْثٍ وَنَزَّلْنَـٰهُ تَنزِيلًا
And [it is] a Qur'an which We have separated [by intervals] that you might recite it to the people over a prolonged period. And We have sent it down progressively.
وَيَقُولُونَ سُبْحَـٰنَ رَبِّنَآ إِن كَانَ وَعْدُ رَبِّنَا لَمَفْعُولًا
And they say, "Exalted is our Lord! Indeed, the promise of our Lord has been fulfilled."
وَيَخِرُّونَ لِلْأَذْقَانِ يَبْكُونَ وَيَزِيدُهُمْ خُشُوعًا ۩
And they fall upon their faces weeping, and the Qur'an increases them in humble submission.