Mbh 5.7.1a

Vaisampayana said, “Having despatched the priest to the city called after the elephant they sent messengers to the kings of various countries. And having sent messengers to other places, the Kuru hero Dhananjaya, that bull among men and son of Kunti, himself set out for Dwaraka. And after Krishna and Valadeva, the descendants of Madhu, had both departed for Dwaraka with all the Vrishnis, the Andhakas and the Bhojas, by hundreds, the royal son of Dhritarashtra had, by sending secret emissaries, furnished himself with information of all the doings of the Pandavas. And learning that Krishna was on his way, the prince went to the city of Dwaraka by means of fine horses possessing the speed of the wind, and taking with him a small number of troops. And on that very day the son of Kunti and Pandu, Dhananjaya, also speedily arrived at the beautiful city of the Anarta land. And the two scions of the Kuru race, those tigers among men, on arriving there saw that Krishna was asleep, and drew near him as he lay down. And as Krishna was sleeping, Duryodhana entered the room, and sat down on a fine seat at the head of the bed. And after him entered that wearer of the diadem the magnanimous Arjuna, and stood at the back of the bed, bowing and joining his hands. And when the descendant of Vrishni, Krishna awoke, he first cast his eyes on Arjuna. And having asked them as to the safety of their journey, and having fitly bestowed his greetings upon them, the slayer of Madhu questioned them as to the occasion of their visit. Then Duryodhana addressed Krishna, with a cheerful countenance, saying, ‘It behoveth you to lend me your help in the impending war. Arjuna and myself are both equally your friends. And, O descendant of Madhu, you also bear the same relationship to both of us. And today, O slayer of Madhu, I have been the first to come to you. Right-minded persons take up the cause of him who comes first to them. This is how the ancients acted.