Skanda Purana 5.256.257

5.256.257

iti śrīskāṃde mahāpurāṇa ekāśītisāhasryāṃ saṃhitāyāṃ ṣaṣṭhe nāgarakhaṇḍe hāṭakeśvarakṣetramāhātmye śeṣaśāyyupākhyāne brahmanāradasaṃvāde cāturmāsyamāhātmye dvādaśākṣaranāmamahimapūrvakapārvatītapovarṇanaṃ nāma saptapaṃcāśaduttaraśatatamo'dhyāyaḥ .. 257 ..

Thus ends the two hundred fifty-seventh chapter, named "Description of Pārvatī's Austerity Preceded by the Greatness of the Twelve-Syllable Name," in the Greatness of the Cāturmāsya within the dialogue of Brahmā and Nārada, in the account of the One Sleeping on Śeṣa, in the Greatness of the Sacred Field of Hāṭakeśvara, in the sixth section, the Nāgarakhaṇḍa, in the Skanda Mahāpurāṇa consisting of eighty-one thousand verses.