Arjuna chose to possess Krishna as a counsellor, although he will not fight. Then is related the coming of the king of Madra for the assistance of the Pandavas.
अयुध्यमानं सचिवं वव्रे कृष्णं धनंजयः। मद्रराजं च राजानमायान्तं पाण्डवान्प्रति॥