Surah As Saffat Tafseer

Truly, they will eat thereof and fill their bellies therewith.

Allah mentions that they will eat of this extremely ugly tree even though its fruit tastes and smells so bad; they will be forced to eat from it because they will not find anything else to eat except this tree and similar things, as Allah says:

لَّيْسَ لَهُمْ طَعَامٌ إِلاَّ مِن ضَرِيعٍ

لااَّ يُسْمِنُ وَلَا يُغْنِى مِن جُوعٍ

No food will there be for them but a poisonous thorny plant, Which will neither nourish nor avail against hunger. (88:6-7)

ثُمَّ إِنَّ لَهُمْ عَلَيْهَا لَشَوْبًا مِّنْ حَمِيمٍ