Mahabharata 3.2.56

नात्मार्थं पाचयेदन्नं न वृथा घातयेत्पशून्न च तत्स्वयमश्नीयाद्विधिवद्यन्न निर्वपेत्

nātmārthaṃ pācayedannaṃ na vṛthā ghātayetpaśūnna ca tatsvayamaśnīyādvidhivadyanna nirvapet

Our plain-language meaning of this verse is waiting for scholar review.