Mbh 5.68.1a

“Sanjaya said, ‘Those adorable bowmen, Arjuna and Vasudeva, who are perfectly equal unto each other in respect of their godlike nature, have taken their births of their own will. O lord, the discus owned by Vasudeva, of abundant energy, occupieth a space full five cubits in diameter, is capable also of being hurled at the foe (in forms large or small) according to the will of the wielder himself, and it dependeth on illusion. Always conspicuous by its effulgence, it is invisible to the Kurus; and in ascertaining the strength or weakness of the Pandavas, that discus offers the best ground. Indeed, that scion of Madhu’s race, endued with great might, vanquished with an effort and in seeming playfulness the formidable Naraka and Samvara and Kansa and (Sisupala) the chief of Chedis. Possessed of divinity and of soul superior to everything, that most exalted of male beings can, by his will alone, bring the earth, firmament, and heaven under his control. Thou askest me repeatedly, O king, about the Pandavas for knowing their strength and weakness. Listen now to all that in brief. If the whole universe be placed on one scale and Janardana on the other, even then Janardana will outweigh the entire universe. Janardana, at his pleasure, can reduce the universe to ashes, but the entire universe is incapable of reducing Janardana to ashes. Wherever there is truthfulness, wherever virtue, wherever modesty, wherever simplicity, even there is Govinda. And thither where Krishna is, success must be. That soul of all creatures, most exalted of male beings, Janardana, guideth, as if in sport, the entire earth, the firmament, and the heaven. Making the Pandavas the indirect means, and beguiling the whole world, Janardana wisheth to blast thy wicked sons that are all addicted to sin. Endued with divine attributes, Kesava, by the power of his soul causeth the wheel of Time, the wheel of the Universe, and the wheel of the Yuga, to revolve incessantly.