I don’t recommend this in general, but for something like a Petite Mort:
Letting time pass is an action applying to nothing.
Understand "time passes" as letting time pass.
Now, instead of ending your rules with:
reject the player's command;
Instead:
change the text of the player's command to "time passes";
This will convert all of those rejected commands into an action that makes time pass, with no other effects.