Is it permissible for the director of a charitable organization to purchase a car donated to the organization at market price, and what is required of him to complete the sale correctly?

Your father is considered an agent for the car donor, and there is a difference of opinion regarding an agent purchasing from himself. According to the view that permits it, your father must have the car owner's permission to buy it for himself. Some scholars hold that it is permissible for the agent to purchase without the principal's permission if there is no longer any interest in the item, or if the principal permits the agent to purchase for himself, or if the purchase occurs in the presence of the principal.