The seventh Durga, Goddess Kalaratri, is the personification of the enemy of darkness and ignorance. The method of worship of Kalaratri is prescribed in the ancient scriptures. She is the slayer of the evil spirits and depicted as having dark skin with flowing hair, four arms and astride a donkey. Her three bright eyes always emit rays and terrible flames come out when she respires through her nostrils. Though she has a fearsome appearance, she is always auspicious in effect and the giver of inexhaustible virtues.