akṛtābhyāgamo 'pi syād yadi yena vinā kvacit / jāyeta hetunā kāryaṃ naitanniyataśaktitaḥ //
The accrual of what is not done would also occur if anywhere [an effect] were produced without that which is [its] cause; [but this is not possible] because the effect arises due to the fixed potency [of its cause].