Mahabharata 1.120.13

शरस्तम्बे च पतितं द्विधा तदभवन्नृपतस्याथ मिथुनं जज्ञे गौतमस्य शरद्वतः

śarastambe ca patitaṃ dvidhā tadabhavannṛpatasyātha mithunaṃ jajñe gautamasya śaradvataḥ

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