What are you carrying?

Two monks were traveling by foot in winter when they came upon a ford swollen by the rain. A pretty girl stood by the water, crying because she couldn't get across. One of the monks said, "Come on!" and scooping her up in his arms marched through the flood, put her down on the other side, and walked on. All day his companion fumed inside. Finally, when they stopped for the evening meal he burst out, "Why did you pick up that girl? You know monks aren't allowed to touch women. And she was pretty, as well!" To which his companion replied, "Why are you are still carrying her then?"