Yāska's Nirukta 42.20

42.20

“aṣṭau” yāni “uttarāṇi padāni” cikyadityevamādīni, te “paśyatikarmāṇaḥ” paśyatyarthāḥ “dhātavaḥ” | “cāyatiprabhṛtīni ca” tānyeva “nāmāni” bhavanti | tāni punaretāni “āmiśrāṇi” saṃsṛṣṭānītyarthaḥ | teṣāṃ prakaraṇopapadābhyāṃ viśeṣāvadhāraṇaṃ bhavati | tatra-kutra kiñcinnāma, kutra kiñcidākhyātam, - ityevameke manyante || anye punaḥ [ kim ? ]-“cikyat 1”, “vicarṣaṇiḥ 6”, “viśvacarṣaṇiḥ 7”, ityetāni nāmāni, yānyanyāni pariśiṣṭāni te dhātavaḥ, tāni punaretāni pūrvācāryaprāmāṇyāt āmiśrāṇi paṭhyante ityeva manyante |