Nīlakaṇṭha-nāmotpatti-kathana
Origin of the Epithet “Nīlakaṇṭha”
ततो वर्षसहस्रं तु ह्यहं पुनरधो गतः / न पश्यामि च तस्यान्तं भीतश्चाहं ततो ऽभवम्
tato varṣasahasraṃ tu hyahaṃ punaradho gataḥ / na paśyāmi ca tasyāntaṃ bhītaścāhaṃ tato 'bhavam
Then for a thousand years I went downward again; yet I did not behold its end, and fear arose within me.