In English
The fourth type of activity is Refinement, removing dirt and dross. When we decide to celebrate a holy day, we repaint doors and windows, clean the floor and polish door knobs etc., and make the house look spick and span. We wipe the dust from off the mirrors. The daily bath and washing clothes are also processes of refining. We have to refine the mind also. But refined things and minds do not last as refined; they have to be subjected to the same processes again and again.