Mahabharata 12.162.4

दुर्लभो हि सुहृच्छ्रोता दुर्लभश्च हितः सुहृत्एतद्धर्मभृतां श्रेष्ठ सर्वं व्याख्यातुमर्हसि

durlabho hi suhṛcchrotā durlabhaśca hitaḥ suhṛtetaddharmabhṛtāṃ śreṣṭha sarvaṃ vyākhyātumarhasi

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