Mahabharata 9.40.20

सरस्वतीं ततो गत्वा स राजा बकमब्रवीत्निपत्य शिरसा भूमौ प्राञ्जलिर्भरतर्षभ

sarasvatīṃ tato gatvā sa rājā bakamabravītnipatya śirasā bhūmau prāñjalirbharatarṣabha

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