Mahabharata 12.221.56
भिक्षां बलिमदत्त्वा च स्वयमन्नानि भुञ्जतेअनिष्ट्वा संविभज्याथ पितृदेवातिथीन्गुरून्
bhikṣāṃ balimadattvā ca svayamannāni bhuñjateaniṣṭvā saṃvibhajyātha pitṛdevātithīngurūn
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book