kasya caikasya sādṛśyāt kalpyatāṃ vācako 'paraḥ / adṛṣṭasaṅgatitvena pūrveṣāṃ tulyatā yadā //
"Through similarity to which particular single [word] would another expressive [word] be assumed, when all previous [words] are equal in having no previously known connection [with meaning]?"