Skandapurana 5.119.120

5.119.120

iti śrīskāṃde mahāpurāṇa ekāśītisāhasryāṃ saṃhitāyāṃ ṣaṣṭhe nāgarakhaṇḍe hāṭakeśvarakṣetramāhātmye kātyāyanyutpattivarṇanaṃnāma viṃśatyuttaraśatatamo'dhyāyaḥ.. ..120... .. cha ..

Thus ends the one hundred and twentieth chapter, entitled 'Description of the Origin of Kātyāyanī,' in the glorification of the sacred field of Hāṭakeśvara in the Nāgarakhaṇḍa, the sixth [section], in the eighty-one-thousand-verse collection of the glorious Skandapurāṇa.