tatra vegākhyaḥ pṛthivyaptejoḥvāyumanassu pañcasu mūrtimatsu dravyeṣu prayatnābhighātaviśeṣāpekṣātkarmaṇo jāyate /
Among these, [the saṃskāra] called vega arises in the five corporeal substances - earth, water, fire, air and mind - from motion dependent on specific effort and impact.