In this slokam Lord explains - When yogi becomes yogayuktan? :
Srimad Bhagavad-Gita :
Chapter-6. ( Dyana-yogam )
Slokam-18. ( When the yogi, by practice of yoga, disciplines his mental activities and becomes situated in Transcendence—devoid of all material desires—he is said to have attained the state yogayuktan )
yada viniyatam cittam atmanyevavatishttate,
nisprhah sarva-kamebhyah yukta itiucyate tada.
viniyatam cittam = particularly disciplined the mind and its activities;
sarva-kamebhyah nisprhah = devoid of all kinds of material desires;
atmani eva = in the Transcendence, certainly;
yada avatishttate = when becomes situated;
tada yukta iti ucyate = at that time, thus, is said to be well situated in yoga.
When will the persons qualified to practice yoga or the science of the individual consciousness attaining communion with then ultimate consciousness become established in yoga reaching perfection. Lord Krishna declares that when the mind refrains and abstains from all external mental activity and becomes exclusively riveted internally on the atma or soul within. Then it has been determined by experts that the mind is established in yoga.
The words atmany evavatisthate means exclusively established in the atma or soul. This means the atma has become the highest goal and only object of endeavour. When the mind has been so tutored and regimented to be fixed and riveted to the atma so that it never strays away; it is simultaneously and automatically weaned from all desires for sense gratification having not the slightest interest to enjoy the objects of the senses. Lord Krishna is stating that at this time an aspirant is considered to possess the necessary qualifications to begin practising mediation.
When does a person perfect the practice of yoga or the science of the individual consciousness attaining communion with the ultimate consciousness? The answer is when the mind becomes fixed and focused exclusively on the atma or soul within. Lord Krishna declares that at this time a person can be considered as having perfected yoga.
The word atmany is used by Lord Krishna to indicate the eternal transcendental abode of the Supreme Lord.
The activities of the yogi are distinguished from those of an ordinary person by his characteristic cessation from all kinds of material desires—of which sex is the chief. A perfect yogi is so well disciplined in the activities of the mind that he can no longer be disturbed by any kind of material desire. This perfectional stage can automatically be attained by persons in consciousness, as is stated in the Srimad Bhagavatham (9.4.18-20):
"King Ambarish first of all engaged his mind on the lotus feet of Lord Krishna; then, one after another, he engaged his words in describing the transcendental qualities of the Lord, his hands in mopping the temple of the Lord, his ears in hearing of the activities of the Lord, his eyes in seeing the transcendental forms of the Lord, his body in touching the bodies of the devotees, his sense of smell in smelling the scents of the lotus flower offered to the Lord, his tongue in tasting the tulasī leaf offered at the lotus feet of the Lord, his legs in going to places of pilgrimage and the temple of the Lord, his head in offering obeisances unto the Lord and his desires in executing the mission of the Lord. All these transcendental activities are quite befitting a pure devotee."
This transcendental stage may be inexpressible subjectively by the followers of the impersonalist path, but it becomes very easy and practical for a person in consciousness, as is apparent in the above description of the engagements of King Ambarish. Unless the mind is fixed on the lotus feet of the Lord by constant remembrance, such transcendental engagements are not practical. In the devotional service of the Lord, therefore, these prescribed activities are called arcana, or engaging all the senses in the service of the Lord. The senses and the mind require engagements. Simple abnegation is not practical. Therefore, for people in general—especially those who are not in the renounced order of life—transcendental engagement of the senses and the mind as described above is the perfect process for transcendental achievement, which is called yukta in the Bhagavadgeeta.
To be continued ...