The Smartas evolved a kind of worship which is known as Panchayatana puja. In this Puja, one or more of the five Hindu Deities (Surya, Shiva, Vishnu, Ganesha and Devi or Shakti) are the objects of veneration. The five symbols of the major Gods are placed on a round open metal dish called Panchayatana, the symbol of the deity preferred by the worshiper being in the center. A similar arrangement is also seen in the medieval temples, in which the central shrine housing the principal Deity is surrounded by four smaller shrines containing the figures of the other deities. Some of the Smartas of South India add a sixth god Kartikeya (See Shanmata). According to Basham, [m]any upper-class Hindus still prefer the way of the Smartas to Saiva and Vaisnava forms of worship.