The name Kṛṣṇa is a form from the root 'kṛṣ', which means to draw or to furrow; because He draws away the faults, such as sin, of His devotees, He is Kṛṣṇa, and the vocative of it is 'O Kṛṣṇa'. The mind is restless, and not merely extremely restless: it is also churning, of a churning nature, for, churning the body and the senses, it throws them into disorder and puts them under another's power. Further, it is strong, mighty, and can be reined in by no one, being hard to ward off. And it is tough, like a great rope, not to be cut. The reining-in, the checking, of such a mind I think is as hard as reining in the wind; and even harder than that, is my thought. The Blessed Lord said: it is so, just as you say.

For the mind, which is by its very nature wavering even toward objects ceaselessly practised, cannot be set by a man in one place; having forcibly churned the man, it goes firmly to another place. To restrain that mind, wavering by nature even toward the objects it has long practised, so as to set it in the self which is of a form contrary to those objects, I count exceedingly hard to do, like the restraining of a great wind of contrary course by a fan and the like. The meaning is that a means of restraining the mind must be told.

This is a brief sub-gloss. For a fuller reading of this verse, see Madhusūdana, Śaṅkara, or Rāmānuja above.

And it is said in the Vyasa-yoga, 'because the mind is unsteady, a firm standing of yoga is not possible without practice, or without dispassion; of this there is no doubt'.