yeṣāṃ punar vaiyākaraṇānāṃ varṇavyatiriktaṃ sphoṭākhyamanavayavaṃ padaṃ vācakam itīṣṭaṃ teṣām arthavatyeṣā śabdanityatvakalpanā / tasya sphoṭākhyasya vastuno nityatvāt //
But for those grammarians who hold that what is expressive is the sphoṭa-named, partless word different from letters, for them this assumption of word-eternality is meaningful, because that sphoṭa-named entity is eternal.