Mahabharata 1.2.85

अज्ञातचर्या पाण्डूनां वासो ब्राह्मणवेश्मनिबकस्य निधनं चैव नागराणां च विस्मयः

ajñātacaryā pāṇḍūnāṃ vāso brāhmaṇaveśmanibakasya nidhanaṃ caiva nāgarāṇāṃ ca vismayaḥ

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