What is the theme in Dharma by Vikram Chandra?

Every form of life, every person and every group, has its dharma. That is the essential theme in the story. In practical terms, dharma refers to a mode of activity that maintains life on the path of spiritual evolution and righteousness. For example, if a man has great musical talent and becomes a violinist, he is pursuing his dharma—the mode of activity that best suits his specific abilities. If he were to ignore his real calling and pursue some other profession or occupation, he would not be following his dharma.