Mahabharata 12.186.19

देवगोष्ठे गवां मध्ये ब्राह्मणानां क्रियापथेस्वाध्याये भोजने चैव दक्षिणं पाणिमुद्धरेत्

devagoṣṭhe gavāṃ madhye brāhmaṇānāṃ kriyāpathesvādhyāye bhojane caiva dakṣiṇaṃ pāṇimuddharet

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