In this account, Sanjay refers to Arjuna as “Kapi Dhwaj,” signifying the presence of the mighty Monkey God Hanuman on Arjuna’s chariot. The backstory reveals a moment when Arjuna, in a moment of pride in his archery skills, remarked to Lord Krishna, “I do not understand why during Lord Rama’s time, the monkeys worked so diligently to construct a bridge from India to Lanka using heavy stones. If I were there, I would have built a bridge of arrows.” The All-Knowing Lord Krishna responded, saying, “Alright, prove it. Show me your bridge.”
Arjuna skillfully shot thousands of arrows, constructing a massive bridge. However, when it came time to test it, Lord Krishna called upon the great Hanuman for the task. As Hanuman began to walk on the bridge, it started to crumble under his feet. Arjuna recognized his arrogance; his bridge of arrows could not have supported the weight of Lord Rama’s vast army. He humbly asked for forgiveness. In return, Hanuman imparted valuable lessons to Arjuna about humility and cautioned him against becoming overly proud of his skills. Hanuman also granted Arjuna a boon that, during the great war, he would be present on Arjuna’s chariot. Consequently, the flag on Arjuna’s chariot bore the emblem of the great Hanuman.