Can you rob someone of their heavenly rewards by praising them to others?

This is probably a bad place to ask anything like this, but I'm hoping to get at least a couple of thoughtful answers...I heard a pastor on the radio telling a story about someone in his church. The story required that he recount something good that this person had done, and the pastor mentioned that he wouldn't name the person, so that this person could still receive the reward for what he had done when he got to heaven. I thought it was interesting that he said this, but I've never heard of it before. So is it possible to praise someone for some good they've done and subsequently rob their rewards from God from them? It doesn't sound right to me.