Background verification

I had a short stint in a firm like < 3 months... so If I don't show this experience in my resume will it come later in background verification? The thing here is there's this small Joining bonus associated with this and if the candidate doesn't show this experience, he doesn't have to do pay it back in fnf recovery but got to trade off experience and relieving letter which doesn't matter in this case as the experience is quite short here.

so folks any experiences or views around this?