कुरून् प्रत्युद्यमं चक्रुरुग्रसेनप्रचोदिता: ॥ १३ ॥
kurūn praty udyamaṁ cakrur
O King, when the Yādavas heard news of this from Śrī Nārada, they became angry. Urged on by King Ugrasena, they prepared for war against the Kurus.
Śrīla Prabhupāda writes: “The great sage Nārada immediately carried the news to the Yadu dynasty that Sāmba was arrested and told them the whole story. The members of the Yadu dynasty became very angry at Sāmba's being arrested, and improperly so by six warriors. Now, with the permission of the head of the Yadu dynasty's king, Ugrasena, they prepared to attack the capital city of the Kuru dynasty.”