Skandapurana 2.9.26.81

2.9.26.81

iti śrīskānde mahāpurāṇa ekāśītisāhasryāṃ saṃhitāyāṃ dvitīye vaiṣṇavakhaṇḍe śrīvāsudevamāhātmye kriyāyogādhikārādinirūpaṇaṃ nāma ṣaḍviṃśo'dhyāyaḥ .. 26 ..

Thus ends the twenty-sixth chapter, named "Ascertainment of the Qualification for Kriyāyoga and Related Topics," in the Śrī Vāsudeva-māhātmya of the second section, the Vaiṣṇavakhaṇḍa, in the glorious Skanda Mahāpurāṇa consisting of eighty-one thousand verses.