سورة Fussilat 41:23

وَذَٰلِكُمْ ظَنُّكُمُ ٱلَّذِى ظَنَنتُم بِرَبِّكُمْ أَرْدَىٰكُمْ فَأَصْبَحْتُم مِّنَ ٱلْخَـٰسِرِينَ ٢٣

It was that ˹false˺ assumption you entertained about your Lord that has brought about your doom, so you have become losers.”