If the marginal utility of commodity is equal to its price, then

If the marginal utility of a commodity is equal to its price, then the consumer is in equilibrium. This means that the consumer is getting the maximum satisfaction possible from the commodity, given its price. If the marginal utility was greater than the price, the consumer would be willing to pay more for an additional unit of the commodity, indicating that they are not yet at their maximum level of satisfaction. Conversely, if the marginal utility was less than the price, the consumer would not be willing to pay the price for an additional unit, indicating that they have already exceeded their maximum level of satisfaction. Therefore, when the marginal utility is equal to the price, the consumer is in a state of balance, and does not want to consume more or less of the commodity.