6.18 A yogi, nihsprhah, who has become free from hankering, thirst; sarva-kamhyah, for all desirable objects, seen and unseen; is tada, then; ucyate, said to be; yuktah, Self-absorbed; yada, when; the viniyatam, controlled; cittam, mind, the mind that has been made fully one-pointed by giving up thought of external objects; avatisthate, rests; atmani eva, in the non-dual Self alone, i.e. he gets established in his own Self.
An illustration in being given for the mind of that yogi which has become Self-absorbed: