﴿ أُو۟لَٰٓئِكَ ٱلَّذِينَ لَهُمْ سُوٓءُ ٱلْعَذَابِ وَهُمْ فِى ٱلْءَاخِرَةِ هُمُ ٱلْأَخْسَرُونَ ﴾

“It is they whom the worst of suffering awaits: for it is they, they who in the life to come shall be the greatest losers!”

Those are they for whom there is an awful chastisement the worst chastisement in this world being killed or being taken captive; and in the Hereafter they will be the greatest losers because they will end up in the Fire which has been made everlasting for them.