Kṛṣṇa condemns spiritual hypocrisy. He says that a person who restrains their outward senses (like sitting in a meditation pose) but continues to dwell on sense objects in their mind is a ‘mithyācāraḥ’, or a pretender. They are merely deluding themselves. It is better to be an honest worker than a dishonest meditator. If your mind is full of desires for sex, money, or fame, putting on the robes of a monk is a form of cheating. This verse is a warning against premature renunciation. One should not try to imitate a sage if they haven’t yet purified their heart. Real discipline starts with the mind, not just the body. Kṛṣṇa is pushing Arjuna toward an honest appraisal of his own state. He wants Arjuna to see that running away from the battlefield won’t make him a yogī if his mind is still preoccupied with his social standing and family attachments.