Bhagavad Gita Chapter 17.28
aśraddhayā hutaḿ dattaḿTranslation
tapas taptaḿ kṛtaḿ ca yat
asad ity ucyate pārtha
na ca tat pretya no iha
Anything done as sacrifice, charity or penance without faith in the Supreme, O son of Pritha, is impermanent. It is called asat and is useless both in this life and the next.