Sankhya Yoga 2.9

 सञ्जय उवाच |

एवमुक्त्वा हृषीकेशं गुडाकेश: परन्तप |

न योत्स्य इति गोविन्दमुक्त्वा तूष्णीं बभूव ह || 9||

sañjaya uvācha

evam-uktvā hṛiṣhīkeśhaṁ guḍākeśhaḥ parantapa

na yotsya iti govindam uktvā tūṣhṇīṁ babhūva ha

sañjayaḥ uvācha—Sanjaya said; evam—thus; uktvā—having spoken; hṛiṣhīkeśham—to Shree Krishna, the master of the mind and senses; guḍākeśhaḥ—Arjun, the conqueror of sleep; parantapaḥ—Arjun, the chastiser of the enemies; na yotsye—I shall not fight; iti—thus; govindam—Krishna, the giver of pleasure to the senses; uktvā—having addressed; tūṣhṇīm—silent; babhūva—became 

Sanjaya said: Having thus spoken, Gudakesh, that chastiser of enemies, addressed Hrishikesh: “Govind, I shall not fight,” and became silent.

Sanjaya understood what dhritarashtra must be thinking. He must have wanted his son’s side to win the war and conquer the kingdom. By addressing Arjuna as Gudakesa (the one who conquered sleep) Sanjaya reminds Dhritarashtra that Arjuna has the control over his mind and body. He was also addressed as Paranthapa (the chastiser of enemies), which means he has the ability to destroy all his enemies. 

Lord Krishna here is addressed as Hrsikesa (The lord of sense organs). He is the controller of mind and senses. Not only that, he is Govinda, the one who knows all living beings in and out. He knows what goes on in Arjuna’s mind and he will solve the crisis happening in his mind. 

Having presented his side of the argument as to why he should not take part in war and proclaimed that he seeks solution from lord Krishna for his problem, Arjuna surrenders his horses, the chariot and his life to lord Krishna and becomes silent. Since he decided he would hear from Krishna, he kept his mouth shut so Krishna could instill some sense into his mind.