Concise Quran Commentary
Except for those who try to secretly listen to the high realm, they will be struck with a flaming meteor and they will be burned.
Tafsir for this Ayah
Surah 15 : Ayah 18
Surah 15 : Ayah 18
إِلَّا مَنِ ٱسْتَرَقَ ٱلسَّمْعَ فَأَتْبَعَهُۥ شِهَابٌ مُّبِينٌ
except the one who manages to eavesdrop, he will then be pursued by a visible burning flame.