kṣaṇikatvāt padārthānāṃ na kācid vidyate kriyā / yat prabandhasya hetuḥ syāt saṃskāro vegasaṃjñakaḥ //
Because things are momentary, there can be no action [in them] of which the saṃskāra named vega could be the cause of [its] continuity.