ayam asyārthaḥ gośabde sādhau vācake sati yā gāvyāder asādhoḥ prayogātgobuddhir bhavatītyucyate, na sā tata eva bhavati, kiṃ tarhi mūlam ---, pradhānaṃ sādhu gośabdamanusṛtya /
This is its meaning: when the correct expressive word "go" exists, what is said to be the understanding of cow arising from the usage of incorrect [forms] like "gāvī" does not arise from that alone, but rather by following the primary, correct word "go."