Mahabharata 9.50.10

कुक्षौ चाप्यदधद्दृष्ट्वा तद्रेतः पुरुषर्षभसा दधार च तं गर्भं पुत्रहेतोर्महानदी

kukṣau cāpyadadhaddṛṣṭvā tadretaḥ puruṣarṣabhasā dadhāra ca taṃ garbhaṃ putrahetormahānadī

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