Tafseer Ibn Kathir of FUSHSHILAT [23]

وَذَلِكُمْ ظَنُّكُمُ الَّذِي ظَنَنتُم بِرَبِّكُمْ أَرْدَاكُمْ فَأَصْبَحْتُم مِّنْ الْخَاسِرِينَ

And that was your assumption which you assumed about your Lord. It has brought you to ruin, and you have become among the losers."