Mahabharata 1.16.14

अनन्तो भगवान्देवो यतो नारायणस्ततःशिर उद्यम्य नागस्य पुनः पुनरवाक्षिपत्

ananto bhagavāndevo yato nārāyaṇastataḥśira udyamya nāgasya punaḥ punaravākṣipat

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