Vaishnavism. A good example of Smarthas becoming Vaishnavas is afforded by the Thummagunta Drāvidas, some of whom have become Vaishnavas, but still take girls in marriage from Smartha families, but do not give their daughters in marriage to Smarthas. All Vaishnavas are expected to undergo a ceremony of initiation into Vaishnavism after the Upanayanam ceremony. At the time of initiation, they are branded with the marks of the chakram and sankha (chank) on the right and left shoulders respectively. The Vaikhānasas and Pancharatras regard the branding as unnecessary. The ceremony of initiation (samāsrayanam) is usually performed by the head of a mutt. Sometimes, however, it is carried out by an elderly member of the family of the candidate. Such families go by the name of Swayam Ācharya Purushas (those who have their own men as Ācharyas).
For Vadagalais there are two mutts. Of these, the Ahobila mutt was formerly at Tiruvallur, but its head-quarters has been transferred to Narasimhapūram near Kumbakonam. The Parakālaswāmi mutt is in the Mysore Province. For Thengalais there are three mutts, at Vanamamalai and Sriperumbudur in Chingleput, and Tirukoilur in South Arcot. These are called respectively the Tothādri, Ethirājajhir, and Emberumānar mutts. There are various points of difference between Vadagalais and Thengalais, which sometimes lead to bitter quarrels in connection with temple worship. During the procession of the god at temple festivals, both Vadagalais and Thengalais go before and after the god, repeating Sanskrit Vēdas and Tamil Prapandhams respectively. Before commencing these, certain slōkas are recited, in one of which the Vadagalais use the expression Rāmānuja dayā pātram, and the Thengalais
