Mahabharata 12.328.33

त्वं चैवाहं च कौन्तेय नरनारायणौ स्मृतौभारावतरणार्थं हि प्रविष्टौ मानुषीं तनुम्

tvaṃ caivāhaṃ ca kaunteya naranārāyaṇau smṛtaubhārāvataraṇārthaṃ hi praviṣṭau mānuṣīṃ tanum

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