The Devimahatmya, known also as Durgasaptasati, is a famous and holy book. The devotees of Goddess use it for parayanam, daily chanting- Each sloka of the Saptasati is considered a holy mantra each verse is considered so holy and powerful that if one carries the book in hand no devil or ghost will dare to approach him. Even now in villages people believe this and carry one copy of the book when they go about in the night. In Bengal this is known as Chandi and is read with reverence during Navarathri and other holy occasions- They believe that this is very auspicious and that it will drive away all evil spirits.