Bhagavatapurana 10.53.20

10.53.20

śrutvaitad bhagavān rāmo vipakṣīya nṛpodyamam /
kṛṣṇaṃ caikaṃ gataṃ hartuṃ kanyāṃ kalaha-śaṅkitaḥ //

20. & 21. The glorious (powerful) Balarama heard of the great preparations of the opposite party and of Krishna’s going alone to bring away the bride, and expecting strife and confusion and full of fraternal affection, he made haste to Kundina with a very large army of elephants, horses, chariots and infantry.