Karma is an ancient Indian concept that refers to an action, work, or deed, and its effect or consequences. In Indian religions, the term more specifically refers to a principle of cause and effect, often descriptively called the principle of karma, wherein individuals' intent and actions (cause) influence their future (effect): Good intent and good deeds contribute to good karma and happier rebirths, while bad intent and bad deeds contribute to bad karma and worse rebirths. In some scriptures, however, there is no link between rebirth and karma.