﴿ رَبَّنَآ ءَاتِهِمْ ضِعْفَيْنِ مِنَ ٱلْعَذَابِ وَٱلْعَنْهُمْ لَعْنًۭا كَبِيرًۭا ﴾

“O our Sustainer! Give them double suffering, and banish them utterly from Thy grace!””

Our Lord give them a double chastisement in other words twice the like of our chastisement and curse them chastise them with numerous curses!’ with the equivalent number of chastisements la‘nan kathīran ‘numerous curses’ is also read la‘nan kabīran which means ‘with a mighty curse’.