What happens when a Referee gambles,?

[Cosedi]

This is a kind of tricky thing. We know that a referee controls and maintains orderliness in a match. He has the power to punish a player and even the coaches of players. Clearly, we have seen sometimes that some referees have favored some teams ahead of the other. What happens when he puts this into gamble and picks a team over another? Is this going to attract a fine or a jail term?