Rinse chickpeas thoroughly under running water and soak for at least 8 hours.
Wash oats, brown rice, and white rice thoroughly and prepare them.
Put the soaked chickpeas, oats, brown rice, and white rice into a pot or rice cooker.
Pour water at 1.2 times the amount of ingredients.
Add a small amount of salt and mix evenly.
Cook the rice in the rice cooker or pot.
Once cooked, gently fluff the rice.