Mahabharata 15.46.13

इदं कष्टतरं चान्यद्भगवन्प्रतिभाति मेवृथाग्निना समायोगो यदभूत्पृथिवीपतेः

idaṃ kaṣṭataraṃ cānyadbhagavanpratibhāti mevṛthāgninā samāyogo yadabhūtpṛthivīpateḥ

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