Mahabharata 7.95.14

एतान्सरथनागाश्वान्निहत्याजौ सपत्तिनःइदं दुर्गं महाघोरं तीर्णमेवोपधारय

etānsarathanāgāśvānnihatyājau sapattinaḥidaṃ durgaṃ mahāghoraṃ tīrṇamevopadhāraya

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