Skandapurana 2.5.17.145

2.5.17.145

iti śrīskāṃde mahāpurāṇa ekāśītisāhasryāṃ saṃhitāyāṃ dvitīye vaiṣṇavakhaṇḍe brahmaviṣṇusaṃvāde mārgaśīrṣamāsamāhātmye mathurāmāhātmyavarṇanaṃnāma saptadaśo'dhyāyaḥ .. 17 ..

Thus ends the seventeenth chapter, titled 'Description of the Māhātmya of Mathurā', in the Māhātmya of the Month of Mārgaśīrṣa, in the dialogue between Brahmā and Viṣṇu, in the second [section], the Vaiṣṇavakhaṇḍa, in the glorious Skanda Mahāpurāṇa, in the compendium of eighty-one thousand [verses].