An-Naba • EN-TAFSIR-IBN-ABBAS
﴿ كَلَّا سَيَعْلَمُونَ ﴾
“Nay, but in time they will come to understand [it]!”
(Nay) this is a reply to the disbelievers, (but they will come to know!) They will come to know upon the advent of death what will be done with them.