Tafsir of Al-Jinn 72:9

And we have sought to reach the heaven; but found it filled with stern guards and flaming fires. And verily, we used to sit there in stations, to (steal) a hearing, but any who listens now will find a flaming fire watching him in ambush. meaning, whoever would like to steal some information by listening, he will find a flaming fire waiting in ambush for him. It will not pass him or miss him, but it will wipe him out and destroy him completely

وأنا ﻻأ ندري أشر أريد بمن في اﻻأرض أم أراد بهم ربهم رشدا