﴿ خَٰلِدِينَ فِيهِ ۖ وَسَآءَ لَهُمْ يَوْمَ ٱلْقِيَٰمَةِ حِمْلًۭا ﴾

“they will abide in this [state], and grievous for them will be the weight [of that burden] on the Day of Resurrection -”

therein that is in the chastisement for such sin abiding. And evil for them on the Day of Resurrection is that burden! himlan a specification qualifying the person of the verb sā’a ‘evil’; the subject of derision the implied wizruhum ‘their sin’ has been omitted; the lām of lahum is explicative and substitutes for yawma’l-qiyāma ‘the Day of Resurrection.