In Kamakhya, shakti peeth, the mansa puja or dev dhawni mela is celebrated in August. There is a book which opens only once in a year. The book is not bind and are loose leaves recited in song form by groups of people and has to be completed in a single night each day during the mela. From July onwards, this book roams around every house of those people who want to do mansa puja. Listening to this katha in a song form removes all the hurdles of life.
in this mela,the 10 to 12 persons of kamakhya other than the Brahmin community on whome the DEVI of different forms like kali,Bhadrakali,chinmasta,Bhuvneswari,Nandi,Ganesh,Kuber,Tara,Sithla etc…etc enter in there body on aug.17,18,19 i.e During Devdhawani,in which different kind of very loud voices comes out from their mouths,which are very fearsome.
These peoples left their homes &family in july,rome around in jungles,sleep on the earth,take food whatever the peoples gives them in Bhiksa till the 17’th september ,Viswakarma day puja,after puja they can return home and live like normal peoples,it is very tough for them.