ago 'pohalakṣaṇo 'bhāvavācakaḥ śabdo 'bhāvaśabdas tadvācyā bahirarthaśusunyatā syāt, vasturūpāpahnavat
The negative word is that word which expresses negation in the form of exclusion of non-cow; and what would be expressed by it would be [nothing but] emptiness [in the form of] absence of external objects, since [it would amount to] denial of the nature of real entities.