Shivapurana 8.9.63

Śivapurāṇa (complete text) 8.9.63

vāmācāraṃ yadā devi hyaṣṭādaśa dināvadhi jīvitaṃ cāṣṭamāsām̐ tu ghasrā dvādasa kīrtitāḥ