Limiting Contacts Passing through the workflow

Is there a way to limit contacts who happens to be triggering a workflow?
My case: There is a schedule trigger that runs at 9:00 am each day and then an action -> "Find Opportunity". In that action i have added filters like pipeline name and pipeline stage. If there are 100 contacts who matches that, all 100 passes through the workflow. I want to limit the contacts to 5 or any number i want. How do i acheive that?