Shivapurana 3.26.64

Śivapurāṇa (complete text) 3.26.64

idaṃ caritraṃ paramaṃ pavitraṃ satāṃ ca sarvapradamāśu divyam |
śivāvatārasya viśāmpatermahā-nandāmahāsaukhyakaraṃ vicitram ||