Bhagavad Gita 3.13

यज्ञशिष्टाशिन: सन्तो मुच्यन्ते सर्वकिल्बिषै: |
भुञ्जते ते त्वघं पापा ये पच्चन्त्यात्मकारणात्

Translation

The spiritually-minded, who eat food that is first offered in sacrifice, are released from all kinds of sin. Others, who cook food for their own enjoyment, verily eat only sin.