idam eva hi vidyamānatvalakṣaṇaṃ vastusvabhāvo yadutārthakriyāsu śaktiḥ sarvasāmarthyavirahalakṣaṇatvād avastutvasyeti sāmarthyād arthakriyāsāmarthyalakṣaṇame va vastutvamavatiṣṭhate /
For this indeed is the defining characteristic of existence, the nature of an entity: namely, the capacity for causal efficacy; since non-entity-hood is characterized by the absence of all capacity, it follows that entity-hood is characterized solely by the capacity for causal efficacy.