Whatever offerings made at Shraddhas are eaten by one with his head wrapped round with a cloth, whatever is eaten by one with face southwards, and whatever is eaten with shoes or sandals on, all goes to please the Asuras.
असूयता च यद् दत्तं यच्च श्रद्धाविवर्जितम्। सर्वं तदसुरेन्द्राय ब्रह्मा भागमकल्पयत्॥