Nārada Muni also described that the symptom of a brāhmaṇa is controlled senses, the symptoms of a kṣatriya are power and fame, the symptom of a vaiśya is service to the brāhmaṇas and kṣatriyas, and the symptom of a śūdra is service to the three higher classes. The qualification for a woman is to be a very faithful and chaste wife. In this way, Nārada Muni described the characteristics of higher and lower grades of people and recommended that one follow the principles of his caste or his hereditary occupation. One cannot suddenly give up a profession to which he is accustomed, and therefore it is recommended that one gradually be awakened. The symptoms of brāhmaṇas, kṣatriyas, vaiśyas, and śūdras are very important, and therefore one should be designated only by these symptoms, and not by birth. Designation by birth is strictly forbidden by Nārada Muni and all great personalities.