Chapter 3 · verse 13 · gita.yoga.org

Bhagavad Gita 3.13

यज्ञशिष्टाशिनः सन्तो मुच्यन्ते सर्वकिल्बिषैः। भुञ्जते ते त्वघं पापा ये पचन्त्यात्मकारणात्

The righteous who eat the remnants of the sacrifice are freed from all sins; but those sinful ones who cook food solely for their own sake indeed consume sin.