Mahabharata 6.1.14

पाण्डुरेणातपत्रेण ध्रियमाणेन मूर्धनिमध्ये नागसहस्रस्य भ्रातृभिः परिवारितम्

pāṇḍureṇātapatreṇa dhriyamāṇena mūrdhanimadhye nāgasahasrasya bhrātṛbhiḥ parivāritam

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