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relation with meditation: Soul is pure knowledge and upayoga is the process of knowing an activity of soul. Upayoga of an ordinary mundane soul, is impure, being influenced by passions, desires etc.. If upayoga is pure, soul is free from passions, desires etc., i.e: it is in its pure state. In fact, this state is a state of meditation, which is to be achieved by efforts of the soul. The state of impure upayaoga is the result or yield of one's own past karma-bandha being on the ascendance (karmodaya). The purpose of dhyāna is destruction of karma-bandha, especially those karma-bandhas which obscure knowledge, and it is possible when the soul is possessed of pure upayoga and is in meditation.136
On another occasion he has described different types of processes of meditation. However, in the end of that discussion he has said that there may be varicties of meditations, but the best type is that wherein soul is the chief object or only soul is there in mediation and that meditation is nothing but 'self-meditation', which is not possible without the knowledge regarding soul and its nature. 137
Such knowledge is not possible without the acquisition of right understanding (bodha), which can be acquired only by the grace of an enlightened teacher
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