Mahabharata 1.120.15

धनुश्च सशरं दृष्ट्वा तथा कृष्णाजिनानि चव्यवस्य ब्राह्मणापत्यं धनुर्वेदान्तगस्य तत्स राज्ञे दर्शयामास मिथुनं सशरं तदा

dhanuśca saśaraṃ dṛṣṭvā tathā kṛṣṇājināni cavyavasya brāhmaṇāpatyaṃ dhanurvedāntagasya tatsa rājñe darśayāmāsa mithunaṃ saśaraṃ tadā

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