Mahabharata 12.326.1

भीष्म उवाच · bhīṣma uvāca

एवं स्तुतः स भगवान्गुह्यैस्तथ्यैश्च नामभिःतं मुनिं दर्शयामास नारदं विश्वरूपधृक्

evaṃ stutaḥ sa bhagavānguhyaistathyaiśca nāmabhiḥtaṃ muniṃ darśayāmāsa nāradaṃ viśvarūpadhṛk

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