Case 1: If you take a spring balance and a brick. Tie the spring balance with the brick, as shown in figure below. Now, pull the brick with some force and observe it.
Case 2: Wrap a butter paper or a polythene bag around the brick. Now, pul the brick again and check the difference.

What will you observe when brick was pulled by spring balance.

Explanation

In case 1, the magnitude of friction force offered by the surface on which the brick is kept would be more in the case of a rough surface.