Mahabharata 5.5.18

5.5.18

tataḥ prajñāvayovṛddhaṃ pāñcālyaḥ svapurohitam |
kurubhyaḥ preṣayāmāsa yudhiṣṭhiramate tadā || 18 ||

"Vaisampayana said, 'King Virata, then having honoured Krishna, sent him home with his followers and relatives. And after Krishna had set out for Dwaraka, Yudhishthira and his followers, with king Virata, began to make preparations for war. And Virata and his relatives sent word to all the monarchs, and king Drupada also did the same. And at the request of those lions of the Kuru race, as also of the two kings of the Matsyas and the Panchalas, many lords of the earth possessed of great strength, came to the place with cheerful hearts. And when the sons of Dhritarashtra heard that the Pandavas had collected a large army, they also assembled many rulers of the earth. And, O king, at that time the whole land became thronged with the rulers of the earth who were marching to espouse the cause of either the Kurus or the Pandavas. And the land was full of military bands composed of four kinds of forces. And from all sides the forces began to pour in. And the goddess Earth with her mountains and forests seemed to tremble beneath their tread. And the king of the Panchalas, having consulted the wishes of Yudhishthira, despatched to the Kurus his own priest, who was old both in years and understanding.'