Srimad-Bhagavatam: Canto 5 - Chapter 24 - Verse 31
Srimad-Bhagavatam: Canto 5 - Chapter 1 - Verse 31 Sanskrit: ततोऽधस्तात्पाताले नागलोकपतयो वासुकिप्रमुखा: शङ्खकुलिकमहाशङ्खश्वेतधनञ्जयधृतराष्ट्रशङ्खचूडकम्बलाश्वतरदेवदत्तादयो महाभोगिनो महामर्षा निवसन्ति येषामु ह वै पञ्चसप्तदशशतसहस्रशीर्षाणां फणासु विरचिता महामणयो रोचिष्णव: पातालविवरतिमिरनिकरं स्वरोचिषा विधमन्ति ॥ ३१ ॥ ITRANS: tato ’dhastāt pātāle nāga-loka-patayo vāsuki-pramukhāḥ śaṅkha-kulika-mahāśaṅkha-śveta-dhanañjaya-dhṛtarāṣṭra-śaṅkhacūḍa-kambalāśvatara-devadattādayo mahā-bhogino mahāmarṣā nivasanti yeṣām u ha vai pañca-sapta-daśa-śata-sahasra-śīrṣāṇāṁ phaṇāsu viracitā mahā-maṇayo rociṣṇavaḥ pātāla-vivara-timira-nikaraṁ sva-rociṣā vidhamanti. Translation: Beneath Rasātala is another planetary system, known as Pātāla or Nāgaloka, where there are many demoniac serpents, the masters of Nāgaloka, such as Śaṅkha, Kulika, Mahāśaṅkha, Śveta, Dhanañjaya, Dhṛtarāṣṭra, Śaṅkhacūḍa, Kambala, Aśvatara and Devadatta....