The text to the reverse of the painting refers to canto 10, chapter 11, verses 41-45 describing how one day when Krishna, Balarama and gopas (cowherd boys) were tending calves the demon Vatsasura appeared with intent to kill the two boys. The demon disguises himself as a calf but was unable to outwit Krishna who saw through the disguise and grabbing Vatsasura whirled him into the air where he landed lifeless on top a tree before falling to the ground where we see him in normal guise but now lifeless.
Medium: Opaque watercolour with gold on wasli
Source: indianminiaturepaintings.co.uk