Skandapurana 16.2.12

16.2.12

caturthaṃ śivadharmākhyaṃ sākṣānnandīśabhāṣitam..
durvāsasoktamāścaryyaṃ nāradoktamataḥ param ..12..

the fourth is named Śivadharma, spoken by Nandīśa himself; / the wonderful [Purāṇa] spoken by Durvāsas, and next to it that spoken by Nārada;