Verse
यज्ञशिष्टाशिनः सन्तो मुच्यन्ते सर्वकिल्बिषैः ।भुञ्जते ते त्वघं पापा ये पचन्त्यात्मकारणात् ॥
The good who eat what is left from the sacrifice, are released from all sin; but evil are they and enjoy sin who cook (the food) for their own sake.
Gītā 3·13