रुद्रशक्तिसमावेशस्तत् क्षेत्रं भावना परा । अन्यथा तस्य तत्त्वस्य का पूजा काश्च तृप्यति ॥ १५१ ॥
The greatest contemplation is that state where one is absorbed into the shakti of Rudra. (Otherwise how can there be any worship of that element and who is it dial is to be gratified?
One's own self is verily the all-pervasive bliss of freedom and the essence of consciousness. Absorption into that nature or form of one's own self is said to be the real bath (purification).
Prana and apana, having moved swiftly in a distinct direction, by the wish of kundalini, that great goddess stretches (elongates herself) and becomes the supreme place of pilgrimage of both manifest and unmanifest.