Mahabharata 2.5.102

वैशंपायन उवाच · vaiśaṃpāyana uvāca

एतदाख्याय स मुनिर्नारदः सुमहातपाःपप्रच्छानन्तरमिदं धर्मात्मानं युधिष्ठिरम्

etadākhyāya sa munirnāradaḥ sumahātapāḥpapracchānantaramidaṃ dharmātmānaṃ yudhiṣṭhiram

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