He is the master of duty who knows it as depending on all the four foundations. It is as difficult to find out the reasons of duties as it is difficult to find out the legs of the snake.
यश्चतुर्गुणसम्पन्नं धर्मं ब्रूयात् स धर्मवित्। अहेरिव हि धर्मस्व पदं दुःखं गवेषितुम्॥