Bhagavad Gita: Chapter 1, Verse 17

                                         काश्यश्च परमेष्वास: शिखण्डी च महारथ: |

                  धृष्टद्युम्नो विराटश्च सात्यकिश्चापराजित: || 17||

                                kāśhyaśhcha parameṣhvāsaḥ śhikhaṇḍī cha mahā-rathaḥ
                                        dhṛiṣhṭadyumno virāṭaśhcha sātyakiśh chāparājitaḥ

The excellent archer and king of Kashi, the great warrior Shikhandi, Dhrishtadyumna, Virat, and the invincible Satyaki

In this verse, Sanjay also called Dhritarashtra the “Ruler of the earth.” The real reason for this appellation was to remind him of his duties as the ruler of the country. With so many kings and princes participating from both sides in this war, it was as if the entire earth was split into two parties. It was definite that this mammoth war would cause irreversible destruction. The only person who could stop the war at this juncture was Dhritarashtra, and Sanjay wanted to know if he was willing to do that.