। ॥ ६७ ॥
In plain words
In the rains, water piles in from every side, the well's spring runs hard — and the water is brackish. But let summer dry that up, and the water in the very same well turns sweet.
Close to the Sanskrit
In the rains, from the accumulation of water, in a well whose spring runs heavy, the water is brackish; but when, by summer itself, it has dried up, the water there takes on sweetness.