Sarvadarshanasangraha 13.73

13.73

bhāṣyakāreṇāpi siddhe śabdārthasaṃbandha ity etad vārtikavyākhyāvasare dravyaṃ hi nityam ity anena granthenāsatyopādhyavacchinnaṃ brahmatattvaṃ dravyaśabdavācyaṃ sarvaśabdārtha iti nirūpitam/

So, too, the author of the Mahābhāṣya, when explaining the Vārttika,[31] "a word, its meaning, and its connection being fixed," in the passage beginning "substance is eternal," has shown that the meaning of all words is Brahman, expressed by the word "substance" and determined by various unreal[32] conditions [as "the nature of horse," &c.]