What does Bhagavad-gītā say about karma?
Kṛṣṇa clearly states in the Gītā that all actions in this world produce a reaction. Actions are defined as karma (pious actions according to Vedic injunctions), vikarma (impious actions contrary to Vedic injunctions) and akarma (those activities that do not produce any material result). Engaging in karma and vikarma forces the lliving being to remain in this material world, reincarnating in various species of life. [...]