Mahabharata 3.168.14

तमसा संवृते लोके घोरेण परुषेण चतुरगा विमुखाश्चासन्प्रास्खलच्चापि मातलिः

tamasā saṃvṛte loke ghoreṇa paruṣeṇa caturagā vimukhāścāsanprāskhalaccāpi mātaliḥ

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