Vyasa, the great commentator of Yogadadana, does somewhat better. He tells us that mind has five habitual states or planes (bhumis): mudha (dull or inert), kshipta (restless, or probably it is samkshipta and means contracted), vikshipta (scattered), ekagra (one-pointed), and niruddha (stopped). He makes a further pregnant statement that samlidhi is natural to mind and it can take place on all bhamis (sarvabhauma); but he adds a warning that the samlidhis of the first three bhUmis are non-yogic and only the samlidhis of the last two bhUmis are yogic. Only the yogic samlidhi leads to spiritual development.