Mahabharata 3.188.13

आयुर्वीर्यमथो बुद्धिर्बलं तेजश्च पाण्डवमनुष्याणामनुयुगं ह्रसतीति निबोध मे

āyurvīryamatho buddhirbalaṃ tejaśca pāṇḍavamanuṣyāṇāmanuyugaṃ hrasatīti nibodha me

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