There are two Pishachas in the river Vipasha named Bahi and Hika. The Bahikas are the offspring of those two Pishchas. They are not creatures created by God. Being of such a low birth how can they know the duties laid down in the scriptures?
बहिश्च नाम हीच विपाशानां पिशाचकौ॥ तयोरपत्यं वाहीका नैषा सृष्टिः प्रजापतेः। ते कथं विविधान् धर्मान् ज्ञास्यन्ते हीनयोनयः॥