After knowing Brahma Jnana, one is free from all distinctions of caste. Devi said-Shankara, I do not understand this knowledge you have spoken of. Tell me how the mind is dissolved. Shankara said-It is said that Brahma Jnana is like dreamless sleep in which is dissolved mind, speech and actions. In the next line I will declare that spoken by the knowers of the truth.
Yoga is the the rejection of all thoughts and concerns.
Devi said-Deva, what is Shakti and what is Shiva. Shakti dwells in the moving mind and Siva dwells in the steady mind. He who is established in the steady mind becomes accomplished while living in the body. Ishvara said-The upper Shakti is in the throat, the lower Shakti is in the anus. The middle Shakti is in the navel and the Shakti above these is without description.