Where Does the Expression "Fall in Morpheus' Arms" Come From?

The Greek mythology inhabits the French language and hides itself in many of our expressions. Morpheus is this character who wraps us with his arms every night. But do you know who this person we entrust our sleep to? - Where does the expression "fall into the arms of Morpheus" come from? (Traditions and heritage).

Let's "wait and see" or "today we're getting down to business" are expressions that we use in our everyday lives. But where do they come from?