The food that is offered by the three twice born classes in Shraddhas in which Mantras are either not uttered or uttered incorrectly and in which the ordinances laid down in the scriptures are not duly performed, if given to guests and other people, is appropriated by Rakshasas.
मन्त्रहीनं क्रियाहीनं यच्छ्राद्धं परिविष्यते। त्रिभिर्वर्णर्नरश्रेष्ठ तं भागं रक्षसां विदुः॥