الآية رقم (26) - خِتَامُهُ مِسْكٌ وَفِي ذَلِكَ فَلْيَتَنَافَسِ الْمُتَنَافِسُونَ

(26) - (The last of it is musk. So for this let the competitors compete. (26)

The last of anything is the end of it, the drinker will find musk at the end of his drink.

This is not an envy, rather, competing in good deeds to reach the day which Allah (swt) is talking about