Mahabharata 12.321.22

तं दृष्ट्वा महदाश्चर्यमपूर्वं विधिविस्तरम्उपोपविष्टः सुप्रीतो नारदो भगवानृषिः

taṃ dṛṣṭvā mahadāścaryamapūrvaṃ vidhivistaramupopaviṣṭaḥ suprīto nārado bhagavānṛṣiḥ

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