Book 5 Chapter VI Paragraph 16

He shall keep as a representative of the prince one who is of the same family, of little valour and of beautiful appearance, lest the mother's mind may be agitated with wild apprehensions. He shall justly protect her. He shall not provide himself with luxurious means of enjoyment. As to the king, he may provide him with new chariots, horses, jewels, dress, women and palaces.