The temple priests perform the
pooja (rituals) daily. Like other Shiva temples of Tamil Nadu, the priests belong to the
Shaivaite community, a Brahmin sub-caste. The temple rituals are performed six times a day; Ushathkalam at 5:30 a.m., Kalasanthi at 8:00 a.m., Uchikalam at 10:00 a.m., Sayarakshai at 6:00 p.m., Irandamkalam at 8:00 p.m. and Ardha Jamam at 10:00 p.m. Each ritual comprises four steps:
abhisheka (sacred bath),
alangaram (decoration),
neivethanam (food offering) and
deepa aradanai (waving of lamps) for both Thayumanaswami and Mattuvar Kuzhal Amman. The worship is held amidst music with
nagaswaram (pipe instrument) and
tavil (percussion instrument), religious instructions in the
Vedas read by priests and prostration by worshippers in front of the temple mast. There are weekly rituals like '
and ', fortnightly rituals like
pradosham and monthly festivals like
amavasai (new moon day),
kiruthigai,
pournami (full moon day) and
sathurthi. The Karthigai festival is celebrated during the
Tamil month of
Karthikai, between November and December, concluding with the celebration of Karthikai Deepam. A huge lamp is lit in a
cauldron, containing three tons of
ghee, at the top of the Malaikottai hills during the Deepam. To mark the occasion, the festival deity of Thayumanaswami
circumambulates the mountain. Every full moon, tens of thousands of pilgrims worship Thayumanaswami by circumambulating the Tiruchirappalli hill barefoot. The circumambulation covers the circumference around the hill, and is referred to as
Girivalam. On the day of yearly
Chitra Pournami, the full moon of the Tamil calendar, hundreds of thousands of pilgrims come from across the world to worship Thayumanaswami. ==Saints and literary mention==