Bhagavatapurana 3.7.34

3.7.34

dānasya tapaso vāpi yac ceṣṭā-pūrtayoḥ phalam /
pravāsa-sthasya yo dharmo yaś ca puṃsa utāpadi //

34. The consequence of charitable gifts, of Tapas and of sacrificial acts and the construction of tanks, wells etc; and what constitutes righteous duty on the part of a traveller as well as of a person in straitened circumstances;