What's the deal with rice? I come from a culture we eat a lot of rice. You can keep rice in the fridge for nearly a week. The only time I throw away rice is if it has visible fungus on it.
You need to keep your rice cold (<7 °C) or hot (>63 °C) enough for the spores not to develop. Letting your rice cool off naturally in a pot is also leaving it at the wrong temperatures for a longer time than if you rapidly cool it off.