What does Rajaswami learn through Tamar in the novel, The Iron Ring?

Rajaswami is a gentle man, who has nonetheless taught Tamar to follow dharma rigidly and believe that the caste system is an unalterable absolute. His affection for Tamar eventually causes him to grow enough to recognize that his rigid teachings are contrary to namaste. After Tamar becomes a chandala, Rajaswami embraces him without concern for his own caste. Through Tamar, he has learned of higher virtues than dharma, and to his credit he chooses to follow them.