In plain words
The poet, to the Lord: Setting down one foot over the whole extent of the earth, you rose so high that the other foot went as far as the waters that enclose the universe. O Lord, who took the measure of the demoness [Pūtanā] and made an end of her when she came in the form of a heavenly lady [Yaśōdā], I cannot know the way you took the measure of the worlds.