Gifts of articles that have been announced before many people or from which a part has been eaten by a Shudra or, that have been seen or licked by a dog, form portions of Rakshasas.
अवघुष्टं च यद् भुक्तमव्रतेन च भारत। परामृष्टं शुना चैव तं भागं रक्षसां विदुः॥