Bhagwad Gita
Chapter 17, Verse 28
अश्रद्धया हुतं दत्तं तपस्तप्तं कृतं च यत्।असदित्युच्यते पार्थ न च तत्प्रेत्य नो इह।।17.28।।
But sacrifices, austerities and charities performed without faith in the Supreme are nonpermanent, O son of Prtha, regardless of whatever rites are performed. They are called asat and are useless both in this life and the next.