Vṛṣṇivaṃśa–Anukīrtana (Enumeration of the Vṛṣṇi Lineage) — Questions on Viṣṇu’s Human Descent
अन्धकारो ऽष्टमस्तेषां ध्वजश्च नवमः स्मृतः / वार्त्रश्च दशमो घोरस्ततो हालाहलः स्मृतः
andhakāro 'ṣṭamasteṣāṃ dhvajaśca navamaḥ smṛtaḥ / vārtraśca daśamo ghorastato hālāhalaḥ smṛtaḥ
The eighth is Andhakāra, and the ninth is Dhvaja. The tenth is Vārtra, most fearsome; thereafter Hālāhala is remembered.