Mahabharata 12.269.4

न चक्षुषा न मनसा न वाचा दूषयेदपिन प्रत्यक्षं परोक्षं वा दूषणं व्याहरेत्क्वचित्

na cakṣuṣā na manasā na vācā dūṣayedapina pratyakṣaṃ parokṣaṃ vā dūṣaṇaṃ vyāharetkvacit

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