In plain words
The first girl sings: He went as messenger for the five Pāṇḍavas and lent them his help in the Bhārata war; he entered the dread pool where the serpent Kāliya lay spitting venom, leapt on its hoods so that it cowered, and, [when it and its wives surrendered,] in mercy let it go alive. Sing of the one coloured like kohl, and leap! Sing of Yaśōdā's own lion, and leap!