Vamśānukramaṇikā: Varuṇa–Kali Descendants and the Naiṛta Grahas
Genealogical Catalogue
नाकस्य शकुनिः पत्नी विघ्नस्य च अयो मुखी / राक्षसास्तु महावीर्याः संध्याद्वयविचारिमः
nākasya śakuniḥ patnī vighnasya ca ayo mukhī / rākṣasāstu mahāvīryāḥ saṃdhyādvayavicārimaḥ
Nāka’s wife was Śakuni, and Vighna’s wife was Ayomukhī; those rākṣasas were of great might, roaming at both twilights.