Skandapurana 6.3.132.4

6.3.132.4

upavāsaparo bhūtvā dvādaśyāṃ nṛpasattama .
vṛṣalāḥ pāpakarmāṇastathaivāndhapiśācinaḥ .. 132.4 ..

intent upon fasting on the twelfth lunar day, O best of kings— / [keeping away from] Śūdras of sinful deeds, and likewise blind Piśācas;