Paadal Petra Sthalams are 275 temples that are revered in the verses of Tevaram and are amongst the greatest Shiva temples of the continent. Vaippu Sthalangal are places that were mentioned casually in the songs in Tevaram. The focus of the moovars (first three poets) hymns suggests darshan (seeing and being seen by God) within the puja (worship) offering. The hymnists made classificatory lists of places like katu (for forest), turai (port or refuge), kulam (water tank) and kalam (field) being used - thus both structured and unstructured places in the religious context find a mention in Tevaram. The temples mentioned in the works of the 9th Tirumarai, Thiruvisaippa, are in turn referred to as Tiruvisaipa Thalangal. The shrine of Gangaikonda Cholapuram are revered as under " He of the Shrine of Gangaikonda Choleswaram takes whatever forms that his worship visualize" - 131,5. In culture Tirumurai was one of the reasons for converting Vedic ritual to Agamic puja followed in Shiva temples. Though these two systems are overlapping, Agamic tradition ensures the perpetuation of the Vedic religion's emphasis on the efficacy of ritual as per Davis. Odhuvars, Sthanikars, or Kattalaiyars offer musical programmes in Shiva temples of Tamil Nadu by singing Tevaram after the daily rituals. These are usually carried out as a chorus programme soon after the divine offering. There are records from Kulothunga Chola III from Nallanyanar temple in South Arcot indicating singing of Tiruvempavai and Tiruvalam of Manickavasagar during special occasions in the temple. From the 13th century, the texts were passed on to the Odhuvars by the Adheenams or mathas and there was no more control by the kings or the brahmanas. The Odhuvars were from the vellala community and were trained in ritual singing in Tevaram schools. Periya Puranam, the eleventh-century Tamil book on the Nayanars that forms the last volume of the Tirumurai, primarily had references only to Tevaram and subsequently expanded to 12 parts and is one of the first anthologies of Tirumurai. One of the first anthologies of moovars hymns called the Tevara Arulmuraitirattu is linked to Tamil Saiva siddhantha philosophy by grouping ninety-nine verses into 10 categories. The category headings are God, soul, bond, grace, guru, methodology, enlightenment, bliss, mantra and liberation - corresponding to Umapthi's work, Tiruvarutpayan. Tirumurai kanda puranam is another anthology for Tirumurai as a whole, but primarily focuses on Tevaram. It is the first of the works