681. Both the vernacular translators render the second line incorrectly. The first line is elliptical, and would be complete by supplying asannam pasyanti. The paraphrase of the second line is Pratyayannam Jneyam Jnanabhisamhitam(prati)ninisante. Jneyam is explained by the commentator as prapancham. Jnanabhisamhitam means that which is known by the name of Knowledge, i.e., Brahma, which has many similar names some of which the commentator quotes such as Satyam (truth), Jananam (knowledge), Anantam (infinite), Vijnanam (true knowledge), Anandam (joy or happiness).
682. Tamas is another name for Rahu. The first line, therefore, refers to the manner in which an eclipse occurs. There is no absolute necessity, however, for taking it as an allusion to the eclipse. The meaning may be more general. Every day, during the lighted fortnight, the moon gains in appearance, as, indeed, every day, during the dark fortnight, it loses in appearance. It may, therefore, be said that darkness approaches it or leaves it for eating it away or discovering it more and more. The actual process of covering and discovering cannot be noticed. This circumstance may be taken as furnishing the simile. In verse 21, similarly, tamas is capable of a wider meaning. In 22, the word Rahu is used. It should be explained, however, that Rahu is no imaginary monster as the Puranas describe but the descending node of the moon, i.e., a portion of space in and about the lunar orbit.
683. This is a very difficult verse and the distinction involved in it are difficult to catch. Of course, I follow the commentator in rendering it. What is said here is that in a dream, Vyakta (manifest body) lies inactive, while the Chetanam (the subtile form) walks forth. In the state called Sushupti (deep slumber which is like death) the indriyasamyuktam (the subtile form) is abandoned, and Jnanam (the Understanding), detached from the former, remains. After this manner, abhava (non-existence, i.e., Emancipation) results from destruction of bhavah or existence as subject to its known conditions of dependence on time, manner of apprehension, etc., for Emancipation is absorption into the Supreme Soul which is independent of all the said conditions. The commentator explains that these observations become necessary to show that Emancipation is possible. In the previous section the speaker drew repeated illustrations for showing that the soul, to be manifest, depended on the body. The hearer is, therefore, cautioned against the impression that the soul's dependence on the body is of such an indissoluble kind that it is incapable of detachment from the body, which of course, is necessary for Emancipation or absorption into the Supreme Soul.
684. Caswasasya is an instance of Bhavapradhananirdesa, i.e., of a reference to the principal attribute connected by it.
685. Indriaih rupyante or nirupyante, hence Indriyarupani.
686. The objects to be abandoned are those which the senses apprehend and those which belong to primordial matter. Those last, as distinguished from the former, are, of course, all the linga or subtile forms or existents which are made up of the tanmatras of the grosser elements.
687. Or, regains his real nature.
688. I adopt the Bombay reading aptavan instead of the Bengal reading atmavit. Pravrittam Dharmam, as explained previously, is that Dharma or practice in which there is pravritti and not nivritti or abstention.
689. The sense is this: by abstaining from the objects of the senses one may conquer one's desire for them. But one does not succeed by that method alone in totally freeing oneself from the very principle of desire. It is not till one succeeds in beholding one's soul that one's principle of desire itself becomes suppressed.
690. The separate existence of an objective world is denied in the first clause here. All objects of the senses are said here to have only a subjective existence; hence the possibility of their being withdrawn into the mind. The latest definition of matter, in European philosophy, is that it is a permanent possibility of sensations.