Mahabharata 4.47.18

आचार्यो मध्यतस्तिष्ठत्वश्वत्थामा तु सव्यतःकृपः शारद्वतो धीमान्पार्श्वं रक्षतु दक्षिणम्

ācāryo madhyatastiṣṭhatvaśvatthāmā tu savyataḥkṛpaḥ śāradvato dhīmānpārśvaṃ rakṣatu dakṣiṇam

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