Indeed, the celebration of sacrifices is his greatest duty as also a complete abstention from injury to all creatures. Never to eat before serving the celestials and guests and dependants is another duty of the householder. The food that remains after serving gods and guests and the dependants is called Vighasa. The householder should eat Vighasa.
यज्ञश्च परमो धर्मस्तथाहिंसा च देहिषु। अपूर्वभेजनं धर्मो विघसाशित्वमेव च॥