SB 7.14.25
esu snanam japo homo
vratam deva-dvijarcanam
pitr-deva-nr-bhutebhyo
yad dattam tad dhy anasvaram
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
During these periods of seasonal change, if one bathes in the Ganges, in the Yamuna or in another sacred place, if one chants, offers fire sacrifices or executes vows, or if one worships the Supreme Lord, the brahmanas, the forefathers, the demigods and the living entities in general, whatever he gives in charity yields a permanently beneficial result.