Answer:
Due to ideology and belief.
Step-by-step explanation:
To go against dharma leads to bad karma, while living according to dharma brings good karma, this is true in Hinduism because this is the ideology of Hindu religion and their belief on the eternal concept of atman. Dharma means religion or religious values while karma means the result of action. Those individuals which go against religion, the result of this action will be bad while if the individuals which follow religion, the result of this action will be good.