Worship with the panchatattva generally takes place in an assembly called a chakra, which is composed of men (sadhaka) and women (shakti), or Bhairava and Bhairavi. The worshippers sit in a circle (chakra), men and women alternately, the shakti sitting on the left of the sadhaka. The Lord of the chakra (chakrasvamin, or chakreshvara) sits with his Shakti in the centre, where the wine-jar and other articles used in the worship are kept. During the chakra all eat, drink, and worship together, there being no distinction of caste. No pashu should, however, be introduced. There are various kinds of chakra, such as the Vira, Raja, Deva, Maha, Chakras productive, it is said, of various fruits for the participators therein. Chapter VI. of the Mahanirvvana Tantra deals with the panchatattva, and Chapter VIII. gives an account of the Bhairavi and Tattva (or Divya) chakras. The latter is for worshippers of the Brahma-Mantra.