وَلْتَنْظُرْ نَفْسٌ مَا قَدَّمَتْ لِغَدٍ
Let every soul look at what it has sent ahead for tomorrow.
The lām after وَ is sakin, and تَنْظُرْ is jussive.
فَلْيَنْظُرِ الْإِنْسَانُ مِمَّ خُلِقَ
Let the human being look at what he was created from.
The underlying form is يَنْظُرْ. In connected reading, a temporary kasrah is heard before الْإِنْسَانُ. The verb remains jussive.