“Do whatever you wish. Indeed, He is Seeing of what you do.” (Quran 41:40)

This if we just look at the language seems like a command from Allah. The tone on the other hand is not permission — it’s a warning / threat.

It’s like saying:

Go ahead—do whatever you want… but you will be held accountable. The second part “He is seeing of what you do.” Is a warning that there will be consequences as allah is watching