High Quality Content by WIKIPEDIA articles! Vegetarianism and religion are strongly linked in a number of religions that originated in ancient India (Jainism, Hinduism and Buddhism). In Jainism, vegetarianism is mandatory for everyone; in Hinduism and Mahayana Buddhism, it is advocated by some influential scriptures and religious authorities. Comparatively, in the Abrahamic religions (Judaism, Christianity and Islam) and in Sikhism, vegetarianism is not promoted by mainstream authorities, although in all these faiths there are small groups actively promoting vegetarianism on religious grounds.