Manava Dharmashastra 3.56

3.56

devatā ramante tuṣyanti prasīdanti | prasannāśca svāmina evābhipretena phalena yojayanti | yatra tu na pūjyante tatra sarvāḥ kriyāḥ yāgahomadānādyā devatārādhanabuddhayā copahārādayo yāḥ kriyante'phalāstā ityarthavādaḥ |

Medhātithi’s commentary (manubhāṣya):
‘The gods rejoice’—are satisfied, pleased; and being pleased, they bestow upon the master of the house desirable rewards.

‘Where they are not honoured, all rites are fruitless’—; sacrifices, libations and charities,—gifts made with the motive of pleasing the gods,—all such acts, though done, become fruitless.

This is a commendatory exaggeration.—(56)