Mahabharata 12.269.16

मध्यस्थ एव तिष्ठेत प्रशंसानिन्दयोः समःएतत्पवित्रं परमं परिव्राजक आश्रमे

madhyastha eva tiṣṭheta praśaṃsānindayoḥ samaḥetatpavitraṃ paramaṃ parivrājaka āśrame

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