If one, seeing a celibate a Brahmana arrived at one's house, offers to him the first portion of his food that belongs as of right to a Brahmana, and eats the residue he is considered as eating Amrita.
अपि वा ब्राह्मणं दृष्ट्वा ब्रह्मचारिणमागतम्। ब्राह्मणाग्र्याहुतिं दत्त्वा अमृतं तस्य भोजनम्॥