Mahabharata 3.81.56

श्यामाकभोजनं तत्र यः प्रयच्छति मानवःदेवान्पितॄंश्च उद्दिश्य तस्य धर्मफलं महत्एकस्मिन्भोजिते विप्रे कोटिर्भवति भोजिता

śyāmākabhojanaṃ tatra yaḥ prayacchati mānavaḥdevānpitṝṃśca uddiśya tasya dharmaphalaṃ mahatekasminbhojite vipre koṭirbhavati bhojitā

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