Mahabharata 10.8.90

तैस्तत्र परिधावद्भिश्चरणोदीरितं रजःअकरोच्छिबिरे तेषां रजन्यां द्विगुणं तमः

taistatra paridhāvadbhiścaraṇodīritaṃ rajaḥakarocchibire teṣāṃ rajanyāṃ dviguṇaṃ tamaḥ

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