Abhilāṣādbahirgatiḥ saṁvāhyasya अभिलाषाद्बहिर्गतिः संवाह्यस्य॥ (sūtra III.40)

abhilāṣāt – desire arising out of wants; bahirgatiḥ - extraversion; saṁvāhyasya – transmigratory empirical individual.

The concept of introversion and extraversion has been discussed in the previous aphorism. When the yogi does not realise that his inner state of turya is nothing but the consciousness of the Lord, he is bound to be afflicted with desires. Desires arise only out of wants and wants arise out of requirements of the body. Requirements of body ultimately manifest as desires. Desire is the root cause of any thought process. In order to satiate the desires, mind and body act in tandem, causing serious karmic adversities. If the yogi surrenders to the Lord, then he is not concerned with the end results of any actions. But, if the aspirant (here the yogi slides to the status of an aspirant) has not developed such an attitude, then he accumulates karmas that cause repeated transmigrations. When he succumbs to his sensory needs, his mind begins to acquire traces of impurity and over a period of time, impurities becomes predominant, his mind gets disconnected automatically from the highest Reality and transforms into a mundane mind. Sometimes, this could happen in a very short span of time. Mind is the most powerful tool of mankind as it is the cause of both good and bad karma-s. This is the reason for saying that final liberation can be attained only through a human form. All the scriptures underline the importance of mind control only for this reason.

When a yogi is in the stage of turya, he acquires a lot of energy. If this energy is wrongly directed towards materialistic world instead of further advancing in the spiritual world, it clearly signals the doomsday of the yogi. This yogi’s consciousness automatically gets disconnected from the Lord and gets focused on the objective world. Spiritual energy is significantly different from other energies that exist in this universe. Spiritual energy continues to gain potency only if it is focused on the Lord. If, on the contrary is focused on the materialistic world, it loses its potency completely. If his actions are not selfish in nature, his divine energy continues to swell. But, on the other hand if he directs this energy to glorify I, me and mine, his fall will be more drastic. Always spiritual fall is more drastic than ascension.

This aphorism clearly says that one has to always remain connected to the Lord, irrespective of his state of consciousness. If by chance, he begins to develop desires arising out of wants, it signals the downfall of the yogi. He then comes under the grip of ignorance, illusion, etc all at the same time, thereby making him yet another empirical individual ready for further transmigrations.