tathā hi sāmpratam eva pratipāditam varṇā eva pratipadaṃ bhinnāḥ kāryakāraṇabhedād arthapratītau samarthā ityanarthākalpaneti /
For it has just been established that the letters themselves, being different in each word, are capable of producing the comprehension of meaning through differences in the causal relationship, [therefore] this [sphoṭa] is a needless assumption.