We are taking service from the animals. The cow is giving milk. The camel is carrying our load. The ass is carrying our load. So many animals. . . Devarṣi-bhūtāpta-nṛṇām, general, people in general, we are obliged. So obligations, there are so many. Devarṣi-bhūtāpta-nṛṇāṁ pitṟṇām (SB 11.5.41). Pitṛs, our forefathers, the dynasty or the family in which we have taken birth.
So Vedic injunction is that we are obliged to so many living entities, and we have to satisfy them. Just like you are obliged to the government for supplying so many amenities, and you have to pay tax just to fulfill your obligation. If you don't pay tax, then you are liable to criminality. Similarly, we are receiving so many benefits from the Indra, Candra. We are getting rains from Indra, the moonshine from the Candra, or the moon-god, and the sunshine from the sun-god. These are essential things, heat and light. So we are obliged, certainly. But if you take shelter of Kṛṣṇa, then you are free from all obligation. Kṛṣṇa says, ahaṁ tvāṁ sarva-pāpebhyo mokṣayiṣyāmi (BG 18.66). If you don't pay tax, then you are liable to be punished. That is pāpa. Similarly, we are obliged to so many living entities, demigods, saintly persons. Certainly we are obliged. We are receiving so much benefit from them. But if we surrender to Kṛṣṇa. . . Śaraṇaṁ śaraṇyaṁ gato mukundam. Śaraṇaṁ śaraṇyaṁ mukundaṁ parihṛtya kartam (SB 11.5.41). Giving aside all other duties, if we simply surrender to Kṛṣṇa, then we are no more obliged.