Skandapurana 5.163.164

5.163.164

iti śrīskāṃde mahāpurāṇa ekāśītisāhasryāṃ saṃhitāyāṃ ṣaṣṭhe nāgarakhaṇḍe
śrīhāṭakeśvarakṣetramāhātmye nāgareśvaranāgarādityaśākambharyutpattivarṇanaṃnāma
catuḥṣaṣṭyuttaraśatatamosdhyāyaḥ .. 164 ..

Thus ends the one hundred and sixty-fourth chapter, titled 'The Description of the Origin of Nāgareśvara, Nāgarāditya, and Śākambharī,' in the glory of the sacred field of Hāṭakeśvara, in the Nāgarakhaṇḍa, the sixth [part] of the eighty-one-thousand-verse collection in the glorious Skandapurāṇa. 164