Mahabharata 3.49.43
युधिष्ठिर उवाच · yudhiṣṭhira uvāca
विस्तरेणाहमिच्छामि नलस्य सुमहात्मनःचरितं वदतां श्रेष्ठ तन्ममाख्यातुमर्हसि
vistareṇāhamicchāmi nalasya sumahātmanaḥcaritaṃ vadatāṃ śreṣṭha tanmamākhyātumarhasi
Our plain-language meaning of this verse is waiting for scholar review.