hand back
To return something to someone by passing or handing it to them. A noun or pronoun can be used between "hand" and "back." Hand this book back to Elaine, will you? I finally had a chance to read it. I took a cupcake from the plate, which I then handed back to my mom.
hand something back (to someone)
to return something to someone by hand. Would you please hand this paper back to Scott? Hand back this book to Fred, if you please.