Mahabharata 12.337.58

वैशंपायन उवाच · vaiśaṃpāyana uvāca

एष ते कथितः पूर्वं संभवोऽस्मद्गुरोर्नृपव्यासस्याक्लिष्टमनसो यथा पृष्टः पुनः शृणु

eṣa te kathitaḥ pūrvaṃ saṃbhavo'smadgurornṛpavyāsasyākliṣṭamanaso yathā pṛṣṭaḥ punaḥ śṛṇu

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