A soul will [then] know what it has put forth and kept back.
Tafseer
{ علمت نفس } أي كل نفس وقت هذه المذكورات وهو يوم القيامة { ما قدمت } من الأعمال { و } ما { أَخَّرت } منها فلم تعمله.
{Every soul will know} that is, every soul at the time of these mentioned things, which is the Day of Resurrection, {what it has put forward} of deeds {and} what it has {put back} of them and did not do.