Skandapurana 17.20.18

17.20.18

16 Then, Vāmana's going into the dense forest for the sake of pilgrimage; after seeing many sacred fields and sacred fords, the darśana of Śiva on the path; description of the conversation between Śiva and Vāmana; there, the recounting of the māhātmya of Indreśvara to Vāmana by Śiva; description of the māhātmya of Śivarātri, and statement of the rules for the Śivarātri observance. [p.] 219.2