اُولٰۤىِٕكَ الَّذِيْنَ لَهُمْ سُوْۤءُ الْعَذَابِ وَهُمْ فِى الْاٰخِرَةِ هُمُ الْاَخْسَرُوْنَ ( النمل: ٥ )
Ulaaa'ikal lazeena lahum sooo'ul 'azaabi wa hum fil Aakhirati humul akhsaroon (an-Naml 27:5)
Those are the ones for whom there will be the worst of punishment, and in the Hereafter they are the greatest losers. (An-Naml  : 5)
1 Mufti Taqi Usmani
Those are the people who deserve the worst punishment and who are the worst losers in the Hereafter.