SB 11.17.50
vedadhyaya-svadha-svaha-
baly-annadyair yathodayam
devarsi-pitr-bhutani
mad-rupany anv-aham yajet
Translation:
One in the grhastha order of life should daily worship the sages by Vedic study, the forefathers by offering the mantra svadha, the demigods by chanting svaha, all living entities by offering shares of one’s meals, and human beings by offering grains and water. Thus considering the demigods, sages, forefathers, living entities and human beings to be manifestations of My potency, one should daily perform these five sacrifices.
Purport:
The Lord again discusses the duties of those in the household order of life. Obviously, the five ritualistic daily sacrifices mentioned here are meant for those who are not pure devotees of the Lord and who thus have to counteract their exploitation of material nature by the abovementioned sacrifices. The International Society for Krishna Consciousness (ISKCON) is training householders, sannyasis, brahmacaris and vanaprasthas to engage twenty-four hours a day in the loving service of the Lord. Those who are full-time missionary workers in ISKCON have no further obligations or sacrifices to perform, as confirmed in the Eleventh Canto of Srimad-Bhagavatam (11.5.41):
devarsi-bhutapta-nrnam pitrnam
na kinkaro nayam rni ca rajan
sarvatmana yah saranam saranyam
gato mukundam parihrtya kartam
“Anyone who has taken shelter at the lotus feet of Mukunda, the giver of liberation, giving up all kinds of obligation, and has taken to the path in all seriousness, owes neither duties nor obligations to the demigods, sages, general living entities, family members, humankind or forefathers.”