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Translation preserving Jain terms:
The main exposition of the cause of nirjara (shedding of karmas) is presented here.
He who is endowed with samvara (stoppage of influx of new karmas), who is the true accomplisher of his own spiritual good, having known the self, meditates steadfastly on the knowledge, he shakes off the dust of karmas. (145)
Commentary: The one who is endowed with samvara, i.e., the one who is equipped with the complete cessation of auspicious and inauspicious dispositions, who has thoroughly understood the true nature of the object (the distinction between what is to be avoided and what is to be accepted), whose intellect is turned away from others' interests, and whose mind is solely engaged in accomplishing his own purpose - such a being, having directly experienced the self, contemplates that very knowledge steadfastly. He, indeed, is completely devoid of attachment, purified of the stickiness of attachment, like a pure crystal pillar, shakes off the dust of previously accumulated karmas.
This shows that meditation is the principal cause of nirjara (shedding of karmas).