Mahabharata 5.109.17
न तत्केनचिदन्येन गतपूर्वं द्विजर्षभऋते नारायणं देवं नरं वा जिष्णुमव्ययम्
na tatkenacidanyena gatapūrvaṃ dvijarṣabhaṛte nārāyaṇaṃ devaṃ naraṃ vā jiṣṇumavyayam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book