That mighty car-warrior (i.e. Karna) always challenged Partha and hoped that he has powerful enough to vanquish Vibhatsu.
यो ह्यस्पर्धत पार्थेन नित्यमेव महारथः॥ आशंसते च बीभत्सुं युद्धे जेतुं सुदारुणम्।