The sagacious Sanjay, in his narration to Dhritarasthra, uses very apt names for the personalities he refers to. Here, Arjun is called
Guḍākeśh
, or “conqueror of sleep.” The power of sleep is such that sooner or later, all living beings succumb to it. But with his determination, Arjun had disciplined himself in such a way that sleep would come to him only when he permitted it, and only for the amount of time he chose. By using the name
Guḍākeśh
for Arjun, Sanjay is subtly hinting to Dhritarasthra, “Just as this “hero amongst men” conquered sleep, so too will he conquer his despondency.”
And the word he uses for Shree Krishna is
Hṛiṣhīkeśh
, or “master of the mind and senses.” The subtle hint here is that he who is the master of his senses will definitely ensure that the events are properly managed.