Six in the third place means:
This refers to a man who has come out of needy circumstances in to comfort and freedom from want. If now, in the manner of an upstart, he tries to take his ease in comfortable surroundings that do not suit his nature, he thereby attracts robbers. If he goes on thus he is sure to bring disgrace upon himself.
Confucius says about this line:
Carrying a burden on the back is the business of common man; a carriage is the appurtenance of a man of rank. Now, when a common man uses the appurtenance of man of rank, robbers plot to take it away from him. If a man is insolent toward those above him and hard toward those below him, robbers plot to attack him. Carelessness in guarding things tempts thieves to steal. Sumptuous ornaments worn by a maiden are an enticement to rob her of her virtue.