Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 25


एषु स्‍नानं जपो होमो व्रतं देवद्विजार्चनम् ।पितृदेवनृभूतेभ्यो यद्दत्तं तद्ध्यनश्वरम् ॥ २५ ॥


eṣu snānaṁ japo homovrataṁ deva-dvijārcanampitṛ-deva-nṛ-bhūtebhyoyad dattaṁ tad dhy anaśvaram


During these periods of seasonal change, if one bathes in the Ganges, in the Yamunā or in another sacred place, if one chants, offers fire sacrifices or executes vows, or if one worships the Supreme Lord, the brāhmaṇas, the forefathers, the demigods and the living entities in general, whatever he gives in charity yields a permanently beneficial result.