Mahabharata 1.35.4

तत्र नेत्रमभून्नागो वासुकिर्बलिनां वरःसमाप्यैव च तत्कर्म पितामहमुपागमन्

tatra netramabhūnnāgo vāsukirbalināṃ varaḥsamāpyaiva ca tatkarma pitāmahamupāgaman

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